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Finding the Fourth Proportional to 249,887.85, 374,831.49 and 81,407.92

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Solution

The fourth proportional to 249,887.85, 374,831.49 and 81,407.92 is: 122,111.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,887.85 : 374,831.49 = 81,407.92 : x
  2. Step 2: Convert to fraction form
    249,887.85/374,831.49 = 81,407.92/x
  3. Step 3: Cross multiply
    249,887.85x = 374,831.49 × 81,407.92
  4. Step 4: Simplify right side
    249,887.85x = 30,514,251,951.40
  5. Step 5: Solve for x
    x = 30,514,251,951.40/249,887.85
  6. Step 6: Final answer
    x = 122,111.79

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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.