Home / 261,390.20-391,566.90-155,895.80

Finding the Fourth Proportional to 261,390.20, 391,566.90 and 155,895.80

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Solution

The fourth proportional to 261,390.20, 391,566.90 and 155,895.80 is: 233,534.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,390.20 : 391,566.90 = 155,895.80 : x
  2. Step 2: Convert to fraction form
    261,390.20/391,566.90 = 155,895.80/x
  3. Step 3: Cross multiply
    261,390.20x = 391,566.90 × 155,895.80
  4. Step 4: Simplify right side
    261,390.20x = 61,043,635,129.02
  5. Step 5: Solve for x
    x = 61,043,635,129.02/261,390.20
  6. Step 6: Final answer
    x = 233,534.52

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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.