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Finding the Fourth Proportional to 249,888.38, 374,832.29 and 81,408.48

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Solution

The fourth proportional to 249,888.38, 374,832.29 and 81,408.48 is: 122,112.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,888.38 : 374,832.29 = 81,408.48 : x
  2. Step 2: Convert to fraction form
    249,888.38/374,832.29 = 81,408.48/x
  3. Step 3: Cross multiply
    249,888.38x = 374,832.29 × 81,408.48
  4. Step 4: Simplify right side
    249,888.38x = 30,514,526,983.82
  5. Step 5: Solve for x
    x = 30,514,526,983.82/249,888.38
  6. Step 6: Final answer
    x = 122,112.63

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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.