Home / 391,932.66-540,982.18-255,987.39

Finding the Fourth Proportional to 391,932.66, 540,982.18 and 255,987.39

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Solution

The fourth proportional to 391,932.66, 540,982.18 and 255,987.39 is: 353,337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,932.66 : 540,982.18 = 255,987.39 : x
  2. Step 2: Convert to fraction form
    391,932.66/540,982.18 = 255,987.39/x
  3. Step 3: Cross multiply
    391,932.66x = 540,982.18 × 255,987.39
  4. Step 4: Simplify right side
    391,932.66x = 138,484,615,014.77
  5. Step 5: Solve for x
    x = 138,484,615,014.77/391,932.66
  6. Step 6: Final answer
    x = 353,337.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.