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Finding the Fourth Proportional to 402,224.28, 555,054.30 and 223,387.80

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Solution

The fourth proportional to 402,224.28, 555,054.30 and 223,387.80 is: 308,266.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,224.28 : 555,054.30 = 223,387.80 : x
  2. Step 2: Convert to fraction form
    402,224.28/555,054.30 = 223,387.80/x
  3. Step 3: Cross multiply
    402,224.28x = 555,054.30 × 223,387.80
  4. Step 4: Simplify right side
    402,224.28x = 123,992,358,957.54
  5. Step 5: Solve for x
    x = 123,992,358,957.54/402,224.28
  6. Step 6: Final answer
    x = 308,266.72

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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.