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Finding the Fourth Proportional to 366,411.84, 549,618.99 and 129,761.43

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Solution

The fourth proportional to 366,411.84, 549,618.99 and 129,761.43 is: 194,642.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,411.84 : 549,618.99 = 129,761.43 : x
  2. Step 2: Convert to fraction form
    366,411.84/549,618.99 = 129,761.43/x
  3. Step 3: Cross multiply
    366,411.84x = 549,618.99 × 129,761.43
  4. Step 4: Simplify right side
    366,411.84x = 71,319,346,097.56
  5. Step 5: Solve for x
    x = 71,319,346,097.56/366,411.84
  6. Step 6: Final answer
    x = 194,642.58

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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.