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Finding the Fourth Proportional to 366,066.20, 549,099.30 and 129,432.80

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Solution

The fourth proportional to 366,066.20, 549,099.30 and 129,432.80 is: 194,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,066.20 : 549,099.30 = 129,432.80 : x
  2. Step 2: Convert to fraction form
    366,066.20/549,099.30 = 129,432.80/x
  3. Step 3: Cross multiply
    366,066.20x = 549,099.30 × 129,432.80
  4. Step 4: Simplify right side
    366,066.20x = 71,071,459,877.04
  5. Step 5: Solve for x
    x = 71,071,459,877.04/366,066.20
  6. Step 6: Final answer
    x = 194,149.20

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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.