Home / 391,989.18-540,968.61-230,951.58

Finding the Fourth Proportional to 391,989.18, 540,968.61 and 230,951.58

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Solution

The fourth proportional to 391,989.18, 540,968.61 and 230,951.58 is: 318,727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,989.18 : 540,968.61 = 230,951.58 : x
  2. Step 2: Convert to fraction form
    391,989.18/540,968.61 = 230,951.58/x
  3. Step 3: Cross multiply
    391,989.18x = 540,968.61 × 230,951.58
  4. Step 4: Simplify right side
    391,989.18x = 124,937,555,209.90
  5. Step 5: Solve for x
    x = 124,937,555,209.90/391,989.18
  6. Step 6: Final answer
    x = 318,727.05

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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.