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Finding the Fourth Proportional to 405,482, 559,565.04 and 221,721.04

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Solution

The fourth proportional to 405,482, 559,565.04 and 221,721.04 is: 305,974.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,482 : 559,565.04 = 221,721.04 : x
  2. Step 2: Convert to fraction form
    405,482/559,565.04 = 221,721.04/x
  3. Step 3: Cross multiply
    405,482x = 559,565.04 × 221,721.04
  4. Step 4: Simplify right side
    405,482x = 124,067,342,616.44
  5. Step 5: Solve for x
    x = 124,067,342,616.44/405,482
  6. Step 6: Final answer
    x = 305,974.97

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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.