Home / 261,347.07-391,676.14-103,489.41

Finding the Fourth Proportional to 261,347.07, 391,676.14 and 103,489.41

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Solution

The fourth proportional to 261,347.07, 391,676.14 and 103,489.41 is: 155,097.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,347.07 : 391,676.14 = 103,489.41 : x
  2. Step 2: Convert to fraction form
    261,347.07/391,676.14 = 103,489.41/x
  3. Step 3: Cross multiply
    261,347.07x = 391,676.14 × 103,489.41
  4. Step 4: Simplify right side
    261,347.07x = 40,534,332,639.68
  5. Step 5: Solve for x
    x = 40,534,332,639.68/261,347.07
  6. Step 6: Final answer
    x = 155,097.71

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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.