Home / 261,821.50-392,366.10-141,618.86

Finding the Fourth Proportional to 261,821.50, 392,366.10 and 141,618.86

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Solution

The fourth proportional to 261,821.50, 392,366.10 and 141,618.86 is: 212,230.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,821.50 : 392,366.10 = 141,618.86 : x
  2. Step 2: Convert to fraction form
    261,821.50/392,366.10 = 141,618.86/x
  3. Step 3: Cross multiply
    261,821.50x = 392,366.10 × 141,618.86
  4. Step 4: Simplify right side
    261,821.50x = 55,566,439,784.65
  5. Step 5: Solve for x
    x = 55,566,439,784.65/261,821.50
  6. Step 6: Final answer
    x = 212,230.24

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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.