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Finding the Fourth Proportional to 625,368.20, 938,513.10 and 251,659.40

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Solution

The fourth proportional to 625,368.20, 938,513.10 and 251,659.40 is: 377,674.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,368.20 : 938,513.10 = 251,659.40 : x
  2. Step 2: Convert to fraction form
    625,368.20/938,513.10 = 251,659.40/x
  3. Step 3: Cross multiply
    625,368.20x = 938,513.10 × 251,659.40
  4. Step 4: Simplify right side
    625,368.20x = 236,185,643,638.14
  5. Step 5: Solve for x
    x = 236,185,643,638.14/625,368.20
  6. Step 6: Final answer
    x = 377,674.53

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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.