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Finding the Fourth Proportional to 223,708.65, 308,724.92 and 126,916.59

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Solution

The fourth proportional to 223,708.65, 308,724.92 and 126,916.59 is: 175,148.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,708.65 : 308,724.92 = 126,916.59 : x
  2. Step 2: Convert to fraction form
    223,708.65/308,724.92 = 126,916.59/x
  3. Step 3: Cross multiply
    223,708.65x = 308,724.92 × 126,916.59
  4. Step 4: Simplify right side
    223,708.65x = 39,182,313,356.92
  5. Step 5: Solve for x
    x = 39,182,313,356.92/223,708.65
  6. Step 6: Final answer
    x = 175,148.85

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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.