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Finding the Fourth Proportional to 351,806.96, 527,710.88 and 85,565.63

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Solution

The fourth proportional to 351,806.96, 527,710.88 and 85,565.63 is: 128,348.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,806.96 : 527,710.88 = 85,565.63 : x
  2. Step 2: Convert to fraction form
    351,806.96/527,710.88 = 85,565.63/x
  3. Step 3: Cross multiply
    351,806.96x = 527,710.88 × 85,565.63
  4. Step 4: Simplify right side
    351,806.96x = 45,153,915,438.25
  5. Step 5: Solve for x
    x = 45,153,915,438.25/351,806.96
  6. Step 6: Final answer
    x = 128,348.56

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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.