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Finding the Fourth Proportional to 351,574.39, 527,361.86 and 85,335.17

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Solution

The fourth proportional to 351,574.39, 527,361.86 and 85,335.17 is: 128,002.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,574.39 : 527,361.86 = 85,335.17 : x
  2. Step 2: Convert to fraction form
    351,574.39/527,361.86 = 85,335.17/x
  3. Step 3: Cross multiply
    351,574.39x = 527,361.86 × 85,335.17
  4. Step 4: Simplify right side
    351,574.39x = 45,002,510,911.13
  5. Step 5: Solve for x
    x = 45,002,510,911.13/351,574.39
  6. Step 6: Final answer
    x = 128,002.81

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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.