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Finding the Fourth Proportional to 223,989.27, 309,105.23 and 123,387.27

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Solution

The fourth proportional to 223,989.27, 309,105.23 and 123,387.27 is: 170,274.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,989.27 : 309,105.23 = 123,387.27 : x
  2. Step 2: Convert to fraction form
    223,989.27/309,105.23 = 123,387.27/x
  3. Step 3: Cross multiply
    223,989.27x = 309,105.23 × 123,387.27
  4. Step 4: Simplify right side
    223,989.27x = 38,139,649,855.49
  5. Step 5: Solve for x
    x = 38,139,649,855.49/223,989.27
  6. Step 6: Final answer
    x = 170,274.45

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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.