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Finding the Fourth Proportional to 390,044.55, 585,066.83 and 153,308.55

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Solution

The fourth proportional to 390,044.55, 585,066.83 and 153,308.55 is: 229,962.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,044.55 : 585,066.83 = 153,308.55 : x
  2. Step 2: Convert to fraction form
    390,044.55/585,066.83 = 153,308.55/x
  3. Step 3: Cross multiply
    390,044.55x = 585,066.83 × 153,308.55
  4. Step 4: Simplify right side
    390,044.55x = 89,695,746,593.85
  5. Step 5: Solve for x
    x = 89,695,746,593.85/390,044.55
  6. Step 6: Final answer
    x = 229,962.83

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Similar ratio
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1.5x scale

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.