Home / 258,948.75-357,335.15-142,639.43

Finding the Fourth Proportional to 258,948.75, 357,335.15 and 142,639.43

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Solution

The fourth proportional to 258,948.75, 357,335.15 and 142,639.43 is: 196,834.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,948.75 : 357,335.15 = 142,639.43 : x
  2. Step 2: Convert to fraction form
    258,948.75/357,335.15 = 142,639.43/x
  3. Step 3: Cross multiply
    258,948.75x = 357,335.15 × 142,639.43
  4. Step 4: Simplify right side
    258,948.75x = 50,970,081,625.10
  5. Step 5: Solve for x
    x = 50,970,081,625.10/258,948.75
  6. Step 6: Final answer
    x = 196,834.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.