Home / 280,202,279,234.40-420,303,418,851.60-129,108,288,524.40

Finding the Fourth Proportional to 280,202,279,234.40, 420,303,418,851.60 and 129,108,288,524.40

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Solution

The fourth proportional to 280,202,279,234.40, 420,303,418,851.60 and 129,108,288,524.40 is: 193,662,432,786.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,202,279,234.40 : 420,303,418,851.60 = 129,108,288,524.40 : x
  2. Step 2: Convert to fraction form
    280,202,279,234.40/420,303,418,851.60 = 129,108,288,524.40/x
  3. Step 3: Cross multiply
    280,202,279,234.40x = 420,303,418,851.60 × 129,108,288,524.40
  4. Step 4: Simplify right side
    280,202,279,234.40x = 54,264,655,068,884,107,264,000
  5. Step 5: Solve for x
    x = 54,264,655,068,884,107,264,000/280,202,279,234.40
  6. Step 6: Final answer
    x = 193,662,432,786.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.