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Finding the Fourth Proportional to 393,921.20, 591,319.20 and 244,330.40

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Solution

The fourth proportional to 393,921.20, 591,319.20 and 244,330.40 is: 366,766.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,921.20 : 591,319.20 = 244,330.40 : x
  2. Step 2: Convert to fraction form
    393,921.20/591,319.20 = 244,330.40/x
  3. Step 3: Cross multiply
    393,921.20x = 591,319.20 × 244,330.40
  4. Step 4: Simplify right side
    393,921.20x = 144,477,256,663.68
  5. Step 5: Solve for x
    x = 144,477,256,663.68/393,921.20
  6. Step 6: Final answer
    x = 366,766.90

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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.