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Finding the Fourth Proportional to 385,906.88, 532,372.15 and 249,986.66

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Solution

The fourth proportional to 385,906.88, 532,372.15 and 249,986.66 is: 344,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,906.88 : 532,372.15 = 249,986.66 : x
  2. Step 2: Convert to fraction form
    385,906.88/532,372.15 = 249,986.66/x
  3. Step 3: Cross multiply
    385,906.88x = 532,372.15 × 249,986.66
  4. Step 4: Simplify right side
    385,906.88x = 133,085,931,899.97
  5. Step 5: Solve for x
    x = 133,085,931,899.97/385,906.88
  6. Step 6: Final answer
    x = 344,865.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.