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Finding the Fourth Proportional to 351,954.67, 527,921.67 and 85,711.32

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Solution

The fourth proportional to 351,954.67, 527,921.67 and 85,711.32 is: 128,564.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,954.67 : 527,921.67 = 85,711.32 : x
  2. Step 2: Convert to fraction form
    351,954.67/527,921.67 = 85,711.32/x
  3. Step 3: Cross multiply
    351,954.67x = 527,921.67 × 85,711.32
  4. Step 4: Simplify right side
    351,954.67x = 45,248,863,192.30
  5. Step 5: Solve for x
    x = 45,248,863,192.30/351,954.67
  6. Step 6: Final answer
    x = 128,564.46

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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.