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Finding the Fourth Proportional to 318,034.15, 438,915.18 and 174,822.10

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Solution

The fourth proportional to 318,034.15, 438,915.18 and 174,822.10 is: 241,269.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,034.15 : 438,915.18 = 174,822.10 : x
  2. Step 2: Convert to fraction form
    318,034.15/438,915.18 = 174,822.10/x
  3. Step 3: Cross multiply
    318,034.15x = 438,915.18 × 174,822.10
  4. Step 4: Simplify right side
    318,034.15x = 76,732,073,489.48
  5. Step 5: Solve for x
    x = 76,732,073,489.48/318,034.15
  6. Step 6: Final answer
    x = 241,269.92

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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.