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Finding the Fourth Proportional to 389,997.80, 584,823.90 and 179,700.20

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Solution

The fourth proportional to 389,997.80, 584,823.90 and 179,700.20 is: 269,470.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,997.80 : 584,823.90 = 179,700.20 : x
  2. Step 2: Convert to fraction form
    389,997.80/584,823.90 = 179,700.20/x
  3. Step 3: Cross multiply
    389,997.80x = 584,823.90 × 179,700.20
  4. Step 4: Simplify right side
    389,997.80x = 105,092,971,794.78
  5. Step 5: Solve for x
    x = 105,092,971,794.78/389,997.80
  6. Step 6: Final answer
    x = 269,470.68

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1.5x scale

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.