Home / 391,824.02-540,723.24-219,780.18

Finding the Fourth Proportional to 391,824.02, 540,723.24 and 219,780.18

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Solution

The fourth proportional to 391,824.02, 540,723.24 and 219,780.18 is: 303,300.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,824.02 : 540,723.24 = 219,780.18 : x
  2. Step 2: Convert to fraction form
    391,824.02/540,723.24 = 219,780.18/x
  3. Step 3: Cross multiply
    391,824.02x = 540,723.24 × 219,780.18
  4. Step 4: Simplify right side
    391,824.02x = 118,840,251,017.38
  5. Step 5: Solve for x
    x = 118,840,251,017.38/391,824.02
  6. Step 6: Final answer
    x = 303,300.06

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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.