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Finding the Fourth Proportional to 279,494.28, 385,691.76 and 152,167.32

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Solution

The fourth proportional to 279,494.28, 385,691.76 and 152,167.32 is: 209,985.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,494.28 : 385,691.76 = 152,167.32 : x
  2. Step 2: Convert to fraction form
    279,494.28/385,691.76 = 152,167.32/x
  3. Step 3: Cross multiply
    279,494.28x = 385,691.76 × 152,167.32
  4. Step 4: Simplify right side
    279,494.28x = 58,689,681,465.28
  5. Step 5: Solve for x
    x = 58,689,681,465.28/279,494.28
  6. Step 6: Final answer
    x = 209,985.27

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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.