Home / 265,721,116.80-398,581,675.20-129,672,220.80

Finding the Fourth Proportional to 265,721,116.80, 398,581,675.20 and 129,672,220.80

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Solution

The fourth proportional to 265,721,116.80, 398,581,675.20 and 129,672,220.80 is: 194,508,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,721,116.80 : 398,581,675.20 = 129,672,220.80 : x
  2. Step 2: Convert to fraction form
    265,721,116.80/398,581,675.20 = 129,672,220.80/x
  3. Step 3: Cross multiply
    265,721,116.80x = 398,581,675.20 × 129,672,220.80
  4. Step 4: Simplify right side
    265,721,116.80x = 51,684,970,993,368,280
  5. Step 5: Solve for x
    x = 51,684,970,993,368,280/265,721,116.80
  6. Step 6: Final answer
    x = 194,508,331.20

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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.