Home / 260,979.18-391,468.80-63,987.18

Finding the Fourth Proportional to 260,979.18, 391,468.80 and 63,987.18

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Solution

The fourth proportional to 260,979.18, 391,468.80 and 63,987.18 is: 95,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,979.18 : 391,468.80 = 63,987.18 : x
  2. Step 2: Convert to fraction form
    260,979.18/391,468.80 = 63,987.18/x
  3. Step 3: Cross multiply
    260,979.18x = 391,468.80 × 63,987.18
  4. Step 4: Simplify right side
    260,979.18x = 25,048,984,569.98
  5. Step 5: Solve for x
    x = 25,048,984,569.98/260,979.18
  6. Step 6: Final answer
    x = 95,980.78

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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.