Home / 261,515.04-391,928.24-103,657.44

Finding the Fourth Proportional to 261,515.04, 391,928.24 and 103,657.44

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Solution

The fourth proportional to 261,515.04, 391,928.24 and 103,657.44 is: 155,349.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,515.04 : 391,928.24 = 103,657.44 : x
  2. Step 2: Convert to fraction form
    261,515.04/391,928.24 = 103,657.44/x
  3. Step 3: Cross multiply
    261,515.04x = 391,928.24 × 103,657.44
  4. Step 4: Simplify right side
    261,515.04x = 40,626,278,022.11
  5. Step 5: Solve for x
    x = 40,626,278,022.11/261,515.04
  6. Step 6: Final answer
    x = 155,349.68

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1.5x scale

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.