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Finding the Fourth Proportional to 223,713.78, 308,725.07 and 123,111.78

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Solution

The fourth proportional to 223,713.78, 308,725.07 and 123,111.78 is: 169,894.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,713.78 : 308,725.07 = 123,111.78 : x
  2. Step 2: Convert to fraction form
    223,713.78/308,725.07 = 123,111.78/x
  3. Step 3: Cross multiply
    223,713.78x = 308,725.07 × 123,111.78
  4. Step 4: Simplify right side
    223,713.78x = 38,007,692,898.32
  5. Step 5: Solve for x
    x = 38,007,692,898.32/223,713.78
  6. Step 6: Final answer
    x = 169,894.29

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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.