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Finding the Fourth Proportional to 417,988.40, 626,982.60 and 252,100.40

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Solution

The fourth proportional to 417,988.40, 626,982.60 and 252,100.40 is: 378,150.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,988.40 : 626,982.60 = 252,100.40 : x
  2. Step 2: Convert to fraction form
    417,988.40/626,982.60 = 252,100.40/x
  3. Step 3: Cross multiply
    417,988.40x = 626,982.60 × 252,100.40
  4. Step 4: Simplify right side
    417,988.40x = 158,062,564,253.04
  5. Step 5: Solve for x
    x = 158,062,564,253.04/417,988.40
  6. Step 6: Final answer
    x = 378,150.60

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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.