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Finding the Fourth Proportional to 379,687.60, 569,531.40 and 99,233.20

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Solution

The fourth proportional to 379,687.60, 569,531.40 and 99,233.20 is: 148,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,687.60 : 569,531.40 = 99,233.20 : x
  2. Step 2: Convert to fraction form
    379,687.60/569,531.40 = 99,233.20/x
  3. Step 3: Cross multiply
    379,687.60x = 569,531.40 × 99,233.20
  4. Step 4: Simplify right side
    379,687.60x = 56,516,423,322.48
  5. Step 5: Solve for x
    x = 56,516,423,322.48/379,687.60
  6. Step 6: Final answer
    x = 148,849.80

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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.