Home / 280,520,072.10-420,780,108.15-127,465,064.10

Finding the Fourth Proportional to 280,520,072.10, 420,780,108.15 and 127,465,064.10

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Solution

The fourth proportional to 280,520,072.10, 420,780,108.15 and 127,465,064.10 is: 191,197,596.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,520,072.10 : 420,780,108.15 = 127,465,064.10 : x
  2. Step 2: Convert to fraction form
    280,520,072.10/420,780,108.15 = 127,465,064.10/x
  3. Step 3: Cross multiply
    280,520,072.10x = 420,780,108.15 × 127,465,064.10
  4. Step 4: Simplify right side
    280,520,072.10x = 53,634,763,457,344,680
  5. Step 5: Solve for x
    x = 53,634,763,457,344,680/280,520,072.10
  6. Step 6: Final answer
    x = 191,197,596.15

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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.