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Finding the Fourth Proportional to 404,639.88, 558,403.10 and 223,351.88

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Solution

The fourth proportional to 404,639.88, 558,403.10 and 223,351.88 is: 308,225.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,639.88 : 558,403.10 = 223,351.88 : x
  2. Step 2: Convert to fraction form
    404,639.88/558,403.10 = 223,351.88/x
  3. Step 3: Cross multiply
    404,639.88x = 558,403.10 × 223,351.88
  4. Step 4: Simplify right side
    404,639.88x = 124,720,382,182.83
  5. Step 5: Solve for x
    x = 124,720,382,182.83/404,639.88
  6. Step 6: Final answer
    x = 308,225.63

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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.