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Finding the Fourth Proportional to 342,720.18, 514,067.46 and 89,998.38

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Solution

The fourth proportional to 342,720.18, 514,067.46 and 89,998.38 is: 134,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,720.18 : 514,067.46 = 89,998.38 : x
  2. Step 2: Convert to fraction form
    342,720.18/514,067.46 = 89,998.38/x
  3. Step 3: Cross multiply
    342,720.18x = 514,067.46 × 89,998.38
  4. Step 4: Simplify right side
    342,720.18x = 46,265,238,610.71
  5. Step 5: Solve for x
    x = 46,265,238,610.71/342,720.18
  6. Step 6: Final answer
    x = 134,994.21

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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.