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Finding the Fourth Proportional to 312,819.60, 469,229.40 and 155,355.60

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Solution

The fourth proportional to 312,819.60, 469,229.40 and 155,355.60 is: 233,033.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,819.60 : 469,229.40 = 155,355.60 : x
  2. Step 2: Convert to fraction form
    312,819.60/469,229.40 = 155,355.60/x
  3. Step 3: Cross multiply
    312,819.60x = 469,229.40 × 155,355.60
  4. Step 4: Simplify right side
    312,819.60x = 72,897,414,974.64
  5. Step 5: Solve for x
    x = 72,897,414,974.64/312,819.60
  6. Step 6: Final answer
    x = 233,033.40

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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.