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Finding the Fourth Proportional to 392,587.60, 541,730.20 and 220,524.88

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Solution

The fourth proportional to 392,587.60, 541,730.20 and 220,524.88 is: 304,301.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,587.60 : 541,730.20 = 220,524.88 : x
  2. Step 2: Convert to fraction form
    392,587.60/541,730.20 = 220,524.88/x
  3. Step 3: Cross multiply
    392,587.60x = 541,730.20 × 220,524.88
  4. Step 4: Simplify right side
    392,587.60x = 119,464,987,347.38
  5. Step 5: Solve for x
    x = 119,464,987,347.38/392,587.60
  6. Step 6: Final answer
    x = 304,301.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.