Home / 257,350.24-386,080.80-79,853.76

Finding the Fourth Proportional to 257,350.24, 386,080.80 and 79,853.76

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Solution

The fourth proportional to 257,350.24, 386,080.80 and 79,853.76 is: 119,797.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,350.24 : 386,080.80 = 79,853.76 : x
  2. Step 2: Convert to fraction form
    257,350.24/386,080.80 = 79,853.76/x
  3. Step 3: Cross multiply
    257,350.24x = 386,080.80 × 79,853.76
  4. Step 4: Simplify right side
    257,350.24x = 30,830,003,543.81
  5. Step 5: Solve for x
    x = 30,830,003,543.81/257,350.24
  6. Step 6: Final answer
    x = 119,797.84

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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.