Home / 642,158.43-962,565.13-215,589.54

Finding the Fourth Proportional to 642,158.43, 962,565.13 and 215,589.54

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Solution

The fourth proportional to 642,158.43, 962,565.13 and 215,589.54 is: 323,158.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,158.43 : 962,565.13 = 215,589.54 : x
  2. Step 2: Convert to fraction form
    642,158.43/962,565.13 = 215,589.54/x
  3. Step 3: Cross multiply
    642,158.43x = 962,565.13 × 215,589.54
  4. Step 4: Simplify right side
    642,158.43x = 207,518,973,596.74
  5. Step 5: Solve for x
    x = 207,518,973,596.74/642,158.43
  6. Step 6: Final answer
    x = 323,158.53

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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.