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Finding the Fourth Proportional to 408,210.52, 612,327.30 and 112,722.52

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Solution

The fourth proportional to 408,210.52, 612,327.30 and 112,722.52 is: 169,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,210.52 : 612,327.30 = 112,722.52 : x
  2. Step 2: Convert to fraction form
    408,210.52/612,327.30 = 112,722.52/x
  3. Step 3: Cross multiply
    408,210.52x = 612,327.30 × 112,722.52
  4. Step 4: Simplify right side
    408,210.52x = 69,023,076,320.80
  5. Step 5: Solve for x
    x = 69,023,076,320.80/408,210.52
  6. Step 6: Final answer
    x = 169,086.96

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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.