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Finding the Fourth Proportional to 223,913.28, 308,996.64 and 123,320.64

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Solution

The fourth proportional to 223,913.28, 308,996.64 and 123,320.64 is: 170,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,913.28 : 308,996.64 = 123,320.64 : x
  2. Step 2: Convert to fraction form
    223,913.28/308,996.64 = 123,320.64/x
  3. Step 3: Cross multiply
    223,913.28x = 308,996.64 × 123,320.64
  4. Step 4: Simplify right side
    223,913.28x = 38,105,663,402.65
  5. Step 5: Solve for x
    x = 38,105,663,402.65/223,913.28
  6. Step 6: Final answer
    x = 170,180.45

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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.