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Finding the Fourth Proportional to 402,242.28, 555,079.14 and 223,405.80

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Solution

The fourth proportional to 402,242.28, 555,079.14 and 223,405.80 is: 308,291.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,242.28 : 555,079.14 = 223,405.80 : x
  2. Step 2: Convert to fraction form
    402,242.28/555,079.14 = 223,405.80/x
  3. Step 3: Cross multiply
    402,242.28x = 555,079.14 × 223,405.80
  4. Step 4: Simplify right side
    402,242.28x = 124,007,899,335.01
  5. Step 5: Solve for x
    x = 124,007,899,335.01/402,242.28
  6. Step 6: Final answer
    x = 308,291.56

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1.5x scale

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.