Home / 210,146,440.80-315,219,661.20-129,524,872.80

Finding the Fourth Proportional to 210,146,440.80, 315,219,661.20 and 129,524,872.80

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Solution

The fourth proportional to 210,146,440.80, 315,219,661.20 and 129,524,872.80 is: 194,287,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,146,440.80 : 315,219,661.20 = 129,524,872.80 : x
  2. Step 2: Convert to fraction form
    210,146,440.80/315,219,661.20 = 129,524,872.80/x
  3. Step 3: Cross multiply
    210,146,440.80x = 315,219,661.20 × 129,524,872.80
  4. Step 4: Simplify right side
    210,146,440.80x = 40,828,786,520,989,096
  5. Step 5: Solve for x
    x = 40,828,786,520,989,096/210,146,440.80
  6. Step 6: Final answer
    x = 194,287,309.20

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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.