Home / 261,283.05-391,882.63-71,699.15

Finding the Fourth Proportional to 261,283.05, 391,882.63 and 71,699.15

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Solution

The fourth proportional to 261,283.05, 391,882.63 and 71,699.15 is: 107,537.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,283.05 : 391,882.63 = 71,699.15 : x
  2. Step 2: Convert to fraction form
    261,283.05/391,882.63 = 71,699.15/x
  3. Step 3: Cross multiply
    261,283.05x = 391,882.63 × 71,699.15
  4. Step 4: Simplify right side
    261,283.05x = 28,097,651,470.76
  5. Step 5: Solve for x
    x = 28,097,651,470.76/261,283.05
  6. Step 6: Final answer
    x = 107,537.21

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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.