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Finding the Fourth Proportional to 625,429.20, 938,604.60 and 251,720.40

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Solution

The fourth proportional to 625,429.20, 938,604.60 and 251,720.40 is: 377,766.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,429.20 : 938,604.60 = 251,720.40 : x
  2. Step 2: Convert to fraction form
    625,429.20/938,604.60 = 251,720.40/x
  3. Step 3: Cross multiply
    625,429.20x = 938,604.60 × 251,720.40
  4. Step 4: Simplify right side
    625,429.20x = 236,265,925,353.84
  5. Step 5: Solve for x
    x = 236,265,925,353.84/625,429.20
  6. Step 6: Final answer
    x = 377,766.06

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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.