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Finding the Fourth Proportional to 392,648.68, 587,810.45 and 242,405.87

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Solution

The fourth proportional to 392,648.68, 587,810.45 and 242,405.87 is: 362,891.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,648.68 : 587,810.45 = 242,405.87 : x
  2. Step 2: Convert to fraction form
    392,648.68/587,810.45 = 242,405.87/x
  3. Step 3: Cross multiply
    392,648.68x = 587,810.45 × 242,405.87
  4. Step 4: Simplify right side
    392,648.68x = 142,488,701,194.30
  5. Step 5: Solve for x
    x = 142,488,701,194.30/392,648.68
  6. Step 6: Final answer
    x = 362,891.07

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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.