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Finding the Fourth Proportional to 259,539.60, 389,309.40 and 147,176.40

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Solution

The fourth proportional to 259,539.60, 389,309.40 and 147,176.40 is: 220,764.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,539.60 : 389,309.40 = 147,176.40 : x
  2. Step 2: Convert to fraction form
    259,539.60/389,309.40 = 147,176.40/x
  3. Step 3: Cross multiply
    259,539.60x = 389,309.40 × 147,176.40
  4. Step 4: Simplify right side
    259,539.60x = 57,297,155,978.16
  5. Step 5: Solve for x
    x = 57,297,155,978.16/259,539.60
  6. Step 6: Final answer
    x = 220,764.60

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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.