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Finding the Fourth Proportional to 486,843.60, 730,265.40 and 171,656.40

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Solution

The fourth proportional to 486,843.60, 730,265.40 and 171,656.40 is: 257,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,843.60 : 730,265.40 = 171,656.40 : x
  2. Step 2: Convert to fraction form
    486,843.60/730,265.40 = 171,656.40/x
  3. Step 3: Cross multiply
    486,843.60x = 730,265.40 × 171,656.40
  4. Step 4: Simplify right side
    486,843.60x = 125,354,729,608.56
  5. Step 5: Solve for x
    x = 125,354,729,608.56/486,843.60
  6. Step 6: Final answer
    x = 257,484.60

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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.