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Finding the Fourth Proportional to 311,587.29, 429,989.92 and 168,346.89

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Solution

The fourth proportional to 311,587.29, 429,989.92 and 168,346.89 is: 232,318.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,587.29 : 429,989.92 = 168,346.89 : x
  2. Step 2: Convert to fraction form
    311,587.29/429,989.92 = 168,346.89/x
  3. Step 3: Cross multiply
    311,587.29x = 429,989.92 × 168,346.89
  4. Step 4: Simplify right side
    311,587.29x = 72,387,465,342.48
  5. Step 5: Solve for x
    x = 72,387,465,342.48/311,587.29
  6. Step 6: Final answer
    x = 232,318.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.