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Finding the Fourth Proportional to 578,446.80, 867,799.80 and 223,429.20

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Solution

The fourth proportional to 578,446.80, 867,799.80 and 223,429.20 is: 335,193.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,446.80 : 867,799.80 = 223,429.20 : x
  2. Step 2: Convert to fraction form
    578,446.80/867,799.80 = 223,429.20/x
  3. Step 3: Cross multiply
    578,446.80x = 867,799.80 × 223,429.20
  4. Step 4: Simplify right side
    578,446.80x = 193,891,815,074.16
  5. Step 5: Solve for x
    x = 193,891,815,074.16/578,446.80
  6. Step 6: Final answer
    x = 335,193.86

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Double scale
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Similar ratio
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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.