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Finding the Fourth Proportional to 259,250.80, 388,876.20 and 147,276.40

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Solution

The fourth proportional to 259,250.80, 388,876.20 and 147,276.40 is: 220,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,250.80 : 388,876.20 = 147,276.40 : x
  2. Step 2: Convert to fraction form
    259,250.80/388,876.20 = 147,276.40/x
  3. Step 3: Cross multiply
    259,250.80x = 388,876.20 × 147,276.40
  4. Step 4: Simplify right side
    259,250.80x = 57,272,286,781.68
  5. Step 5: Solve for x
    x = 57,272,286,781.68/259,250.80
  6. Step 6: Final answer
    x = 220,914.60

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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.