Home / 438,931.45-658,397.22-123,388.39

Finding the Fourth Proportional to 438,931.45, 658,397.22 and 123,388.39

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Solution

The fourth proportional to 438,931.45, 658,397.22 and 123,388.39 is: 185,082.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,931.45 : 658,397.22 = 123,388.39 : x
  2. Step 2: Convert to fraction form
    438,931.45/658,397.22 = 123,388.39/x
  3. Step 3: Cross multiply
    438,931.45x = 658,397.22 × 123,388.39
  4. Step 4: Simplify right side
    438,931.45x = 81,238,572,956.28
  5. Step 5: Solve for x
    x = 81,238,572,956.28/438,931.45
  6. Step 6: Final answer
    x = 185,082.60

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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.