Home / 405,272.67-559,278.17-221,515.04

Finding the Fourth Proportional to 405,272.67, 559,278.17 and 221,515.04

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Solution

The fourth proportional to 405,272.67, 559,278.17 and 221,515.04 is: 305,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,272.67 : 559,278.17 = 221,515.04 : x
  2. Step 2: Convert to fraction form
    405,272.67/559,278.17 = 221,515.04/x
  3. Step 3: Cross multiply
    405,272.67x = 559,278.17 × 221,515.04
  4. Step 4: Simplify right side
    405,272.67x = 123,888,522,294.71
  5. Step 5: Solve for x
    x = 123,888,522,294.71/405,272.67
  6. Step 6: Final answer
    x = 305,691.78

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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.