Home / 402,217.28-555,044.64-223,380.80

Finding the Fourth Proportional to 402,217.28, 555,044.64 and 223,380.80

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Solution

The fourth proportional to 402,217.28, 555,044.64 and 223,380.80 is: 308,257.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,217.28 : 555,044.64 = 223,380.80 : x
  2. Step 2: Convert to fraction form
    402,217.28/555,044.64 = 223,380.80/x
  3. Step 3: Cross multiply
    402,217.28x = 555,044.64 × 223,380.80
  4. Step 4: Simplify right side
    402,217.28x = 123,986,315,718.91
  5. Step 5: Solve for x
    x = 123,986,315,718.91/402,217.28
  6. Step 6: Final answer
    x = 308,257.06

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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.