Home / 391,095.06-539,719.38-221,329.14

Finding the Fourth Proportional to 391,095.06, 539,719.38 and 221,329.14

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Solution

The fourth proportional to 391,095.06, 539,719.38 and 221,329.14 is: 305,438.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,095.06 : 539,719.38 = 221,329.14 : x
  2. Step 2: Convert to fraction form
    391,095.06/539,719.38 = 221,329.14/x
  3. Step 3: Cross multiply
    391,095.06x = 539,719.38 × 221,329.14
  4. Step 4: Simplify right side
    391,095.06x = 119,455,626,216.73
  5. Step 5: Solve for x
    x = 119,455,626,216.73/391,095.06
  6. Step 6: Final answer
    x = 305,438.85

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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.