Home / 402,731.04-555,781.83-221,456.04

Finding the Fourth Proportional to 402,731.04, 555,781.83 and 221,456.04

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Solution

The fourth proportional to 402,731.04, 555,781.83 and 221,456.04 is: 305,616.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,731.04 : 555,781.83 = 221,456.04 : x
  2. Step 2: Convert to fraction form
    402,731.04/555,781.83 = 221,456.04/x
  3. Step 3: Cross multiply
    402,731.04x = 555,781.83 × 221,456.04
  4. Step 4: Simplify right side
    402,731.04x = 123,081,243,175.75
  5. Step 5: Solve for x
    x = 123,081,243,175.75/402,731.04
  6. Step 6: Final answer
    x = 305,616.48

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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.