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Finding the Fourth Proportional to 438,606.72, 658,110.24 and 238,627.20

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Solution

The fourth proportional to 438,606.72, 658,110.24 and 238,627.20 is: 358,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,606.72 : 658,110.24 = 238,627.20 : x
  2. Step 2: Convert to fraction form
    438,606.72/658,110.24 = 238,627.20/x
  3. Step 3: Cross multiply
    438,606.72x = 658,110.24 × 238,627.20
  4. Step 4: Simplify right side
    438,606.72x = 157,043,003,862.53
  5. Step 5: Solve for x
    x = 157,043,003,862.53/438,606.72
  6. Step 6: Final answer
    x = 358,049.70

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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.