Home / 391,583.13-540,351.14-217,158.95

Finding the Fourth Proportional to 391,583.13, 540,351.14 and 217,158.95

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Solution

The fourth proportional to 391,583.13, 540,351.14 and 217,158.95 is: 299,660.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,583.13 : 540,351.14 = 217,158.95 : x
  2. Step 2: Convert to fraction form
    391,583.13/540,351.14 = 217,158.95/x
  3. Step 3: Cross multiply
    391,583.13x = 540,351.14 × 217,158.95
  4. Step 4: Simplify right side
    391,583.13x = 117,342,082,406.15
  5. Step 5: Solve for x
    x = 117,342,082,406.15/391,583.13
  6. Step 6: Final answer
    x = 299,660.72

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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.