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Finding the Fourth Proportional to 261,887.86, 392,854.44 and 72,348.17

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Solution

The fourth proportional to 261,887.86, 392,854.44 and 72,348.17 is: 108,528.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,887.86 : 392,854.44 = 72,348.17 : x
  2. Step 2: Convert to fraction form
    261,887.86/392,854.44 = 72,348.17/x
  3. Step 3: Cross multiply
    261,887.86x = 392,854.44 × 72,348.17
  4. Step 4: Simplify right side
    261,887.86x = 28,422,299,810.37
  5. Step 5: Solve for x
    x = 28,422,299,810.37/261,887.86
  6. Step 6: Final answer
    x = 108,528.51

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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.