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Finding the Fourth Proportional to 291,812.39, 437,591.45 and 155,005.55

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Solution

The fourth proportional to 291,812.39, 437,591.45 and 155,005.55 is: 232,440.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,812.39 : 437,591.45 = 155,005.55 : x
  2. Step 2: Convert to fraction form
    291,812.39/437,591.45 = 155,005.55/x
  3. Step 3: Cross multiply
    291,812.39x = 437,591.45 × 155,005.55
  4. Step 4: Simplify right side
    291,812.39x = 67,829,103,382.55
  5. Step 5: Solve for x
    x = 67,829,103,382.55/291,812.39
  6. Step 6: Final answer
    x = 232,440.79

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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.