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Finding the Fourth Proportional to 234,138.57, 351,314.51 and 99,239.55

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Solution

The fourth proportional to 234,138.57, 351,314.51 and 99,239.55 is: 148,904.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,138.57 : 351,314.51 = 99,239.55 : x
  2. Step 2: Convert to fraction form
    234,138.57/351,314.51 = 99,239.55/x
  3. Step 3: Cross multiply
    234,138.57x = 351,314.51 × 99,239.55
  4. Step 4: Simplify right side
    234,138.57x = 34,864,293,880.87
  5. Step 5: Solve for x
    x = 34,864,293,880.87/234,138.57
  6. Step 6: Final answer
    x = 148,904.53

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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.