Home / 402,218.28-555,046.02-223,381.80

Finding the Fourth Proportional to 402,218.28, 555,046.02 and 223,381.80

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Solution

The fourth proportional to 402,218.28, 555,046.02 and 223,381.80 is: 308,258.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,218.28 : 555,046.02 = 223,381.80 : x
  2. Step 2: Convert to fraction form
    402,218.28/555,046.02 = 223,381.80/x
  3. Step 3: Cross multiply
    402,218.28x = 555,046.02 × 223,381.80
  4. Step 4: Simplify right side
    402,218.28x = 123,987,179,030.44
  5. Step 5: Solve for x
    x = 123,987,179,030.44/402,218.28
  6. Step 6: Final answer
    x = 308,258.44

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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.