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Finding the Fourth Proportional to 252,938.60, 379,407.90 and 238,423.40

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Solution

The fourth proportional to 252,938.60, 379,407.90 and 238,423.40 is: 357,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,938.60 : 379,407.90 = 238,423.40 : x
  2. Step 2: Convert to fraction form
    252,938.60/379,407.90 = 238,423.40/x
  3. Step 3: Cross multiply
    252,938.60x = 379,407.90 × 238,423.40
  4. Step 4: Simplify right side
    252,938.60x = 90,459,721,504.86
  5. Step 5: Solve for x
    x = 90,459,721,504.86/252,938.60
  6. Step 6: Final answer
    x = 357,635.10

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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.