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Finding the Fourth Proportional to 625,880.79, 938,996.28 and 205,451.91

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Solution

The fourth proportional to 625,880.79, 938,996.28 and 205,451.91 is: 308,235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,880.79 : 938,996.28 = 205,451.91 : x
  2. Step 2: Convert to fraction form
    625,880.79/938,996.28 = 205,451.91/x
  3. Step 3: Cross multiply
    625,880.79x = 938,996.28 × 205,451.91
  4. Step 4: Simplify right side
    625,880.79x = 192,918,579,208.90
  5. Step 5: Solve for x
    x = 192,918,579,208.90/625,880.79
  6. Step 6: Final answer
    x = 308,235.34

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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.