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Finding the Fourth Proportional to 249,887.38, 374,830.79 and 81,407.48

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Solution

The fourth proportional to 249,887.38, 374,830.79 and 81,407.48 is: 122,111.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,887.38 : 374,830.79 = 81,407.48 : x
  2. Step 2: Convert to fraction form
    249,887.38/374,830.79 = 81,407.48/x
  3. Step 3: Cross multiply
    249,887.38x = 374,830.79 × 81,407.48
  4. Step 4: Simplify right side
    249,887.38x = 30,514,030,325.46
  5. Step 5: Solve for x
    x = 30,514,030,325.46/249,887.38
  6. Step 6: Final answer
    x = 122,111.13

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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.