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Finding the Fourth Proportional to 392,037.62, 587,986.16 and 103,851.16

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Solution

The fourth proportional to 392,037.62, 587,986.16 and 103,851.16 is: 155,758.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,037.62 : 587,986.16 = 103,851.16 : x
  2. Step 2: Convert to fraction form
    392,037.62/587,986.16 = 103,851.16/x
  3. Step 3: Cross multiply
    392,037.62x = 587,986.16 × 103,851.16
  4. Step 4: Simplify right side
    392,037.62x = 61,063,042,790.72
  5. Step 5: Solve for x
    x = 61,063,042,790.72/392,037.62
  6. Step 6: Final answer
    x = 155,758.12

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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.