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Finding the Fourth Proportional to 392,601.30, 587,739.42 and 242,358.50

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Solution

The fourth proportional to 392,601.30, 587,739.42 and 242,358.50 is: 362,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,601.30 : 587,739.42 = 242,358.50 : x
  2. Step 2: Convert to fraction form
    392,601.30/587,739.42 = 242,358.50/x
  3. Step 3: Cross multiply
    392,601.30x = 587,739.42 × 242,358.50
  4. Step 4: Simplify right side
    392,601.30x = 142,443,644,222.07
  5. Step 5: Solve for x
    x = 142,443,644,222.07/392,601.30
  6. Step 6: Final answer
    x = 362,820.10

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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.