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Finding the Fourth Proportional to 351,864.60, 527,792.34 and 85,625.28

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Solution

The fourth proportional to 351,864.60, 527,792.34 and 85,625.28 is: 128,436.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,864.60 : 527,792.34 = 85,625.28 : x
  2. Step 2: Convert to fraction form
    351,864.60/527,792.34 = 85,625.28/x
  3. Step 3: Cross multiply
    351,864.60x = 527,792.34 × 85,625.28
  4. Step 4: Simplify right side
    351,864.60x = 45,192,366,894.36
  5. Step 5: Solve for x
    x = 45,192,366,894.36/351,864.60
  6. Step 6: Final answer
    x = 128,436.81

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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.