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Finding the Fourth Proportional to 521,291.76, 781,885.80 and 240,804.96

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Solution

The fourth proportional to 521,291.76, 781,885.80 and 240,804.96 is: 361,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,291.76 : 781,885.80 = 240,804.96 : x
  2. Step 2: Convert to fraction form
    521,291.76/781,885.80 = 240,804.96/x
  3. Step 3: Cross multiply
    521,291.76x = 781,885.80 × 240,804.96
  4. Step 4: Simplify right side
    521,291.76x = 188,281,978,793.57
  5. Step 5: Solve for x
    x = 188,281,978,793.57/521,291.76
  6. Step 6: Final answer
    x = 361,183.49

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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.