Home / 258,517.20-356,753.71-145,340.76

Finding the Fourth Proportional to 258,517.20, 356,753.71 and 145,340.76

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Solution

The fourth proportional to 258,517.20, 356,753.71 and 145,340.76 is: 200,570.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,517.20 : 356,753.71 = 145,340.76 : x
  2. Step 2: Convert to fraction form
    258,517.20/356,753.71 = 145,340.76/x
  3. Step 3: Cross multiply
    258,517.20x = 356,753.71 × 145,340.76
  4. Step 4: Simplify right side
    258,517.20x = 51,850,855,344.22
  5. Step 5: Solve for x
    x = 51,850,855,344.22/258,517.20
  6. Step 6: Final answer
    x = 200,570.23

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1.5x scale

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.