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Finding the Fourth Proportional to 347,739.20, 521,479.20 and 242,244.80

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Solution

The fourth proportional to 347,739.20, 521,479.20 and 242,244.80 is: 363,276.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,739.20 : 521,479.20 = 242,244.80 : x
  2. Step 2: Convert to fraction form
    347,739.20/521,479.20 = 242,244.80/x
  3. Step 3: Cross multiply
    347,739.20x = 521,479.20 × 242,244.80
  4. Step 4: Simplify right side
    347,739.20x = 126,325,624,508.16
  5. Step 5: Solve for x
    x = 126,325,624,508.16/347,739.20
  6. Step 6: Final answer
    x = 363,276.92

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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.