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Finding the Fourth Proportional to 351,951.42, 527,916.80 and 85,708.07

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Solution

The fourth proportional to 351,951.42, 527,916.80 and 85,708.07 is: 128,559.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,951.42 : 527,916.80 = 85,708.07 : x
  2. Step 2: Convert to fraction form
    351,951.42/527,916.80 = 85,708.07/x
  3. Step 3: Cross multiply
    351,951.42x = 527,916.80 × 85,708.07
  4. Step 4: Simplify right side
    351,951.42x = 45,246,727,408.99
  5. Step 5: Solve for x
    x = 45,246,727,408.99/351,951.42
  6. Step 6: Final answer
    x = 128,559.58

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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.