Home / 257,563.74-386,400.33-80,066.46

Finding the Fourth Proportional to 257,563.74, 386,400.33 and 80,066.46

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Solution

The fourth proportional to 257,563.74, 386,400.33 and 80,066.46 is: 120,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,563.74 : 386,400.33 = 80,066.46 : x
  2. Step 2: Convert to fraction form
    257,563.74/386,400.33 = 80,066.46/x
  3. Step 3: Cross multiply
    257,563.74x = 386,400.33 × 80,066.46
  4. Step 4: Simplify right side
    257,563.74x = 30,937,706,565.93
  5. Step 5: Solve for x
    x = 30,937,706,565.93/257,563.74
  6. Step 6: Final answer
    x = 120,116.70

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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.