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Finding the Fourth Proportional to 442,957.20, 663,982.20 and 217,971.60

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Solution

The fourth proportional to 442,957.20, 663,982.20 and 217,971.60 is: 326,734.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,957.20 : 663,982.20 = 217,971.60 : x
  2. Step 2: Convert to fraction form
    442,957.20/663,982.20 = 217,971.60/x
  3. Step 3: Cross multiply
    442,957.20x = 663,982.20 × 217,971.60
  4. Step 4: Simplify right side
    442,957.20x = 144,729,262,505.52
  5. Step 5: Solve for x
    x = 144,729,262,505.52/442,957.20
  6. Step 6: Final answer
    x = 326,734.19

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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.