Home / 261,529.44-391,949.51-103,671.78

Finding the Fourth Proportional to 261,529.44, 391,949.51 and 103,671.78

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Solution

The fourth proportional to 261,529.44, 391,949.51 and 103,671.78 is: 155,371.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,529.44 : 391,949.51 = 103,671.78 : x
  2. Step 2: Convert to fraction form
    261,529.44/391,949.51 = 103,671.78/x
  3. Step 3: Cross multiply
    261,529.44x = 391,949.51 × 103,671.78
  4. Step 4: Simplify right side
    261,529.44x = 40,634,102,853.47
  5. Step 5: Solve for x
    x = 40,634,102,853.47/261,529.44
  6. Step 6: Final answer
    x = 155,371.05

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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.