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Finding the Fourth Proportional to 318,751.20, 478,126.80 and 244,101.60

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Solution

The fourth proportional to 318,751.20, 478,126.80 and 244,101.60 is: 366,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,751.20 : 478,126.80 = 244,101.60 : x
  2. Step 2: Convert to fraction form
    318,751.20/478,126.80 = 244,101.60/x
  3. Step 3: Cross multiply
    318,751.20x = 478,126.80 × 244,101.60
  4. Step 4: Simplify right side
    318,751.20x = 116,711,516,882.88
  5. Step 5: Solve for x
    x = 116,711,516,882.88/318,751.20
  6. Step 6: Final answer
    x = 366,152.40

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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.