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Finding the Fourth Proportional to 225,370.86, 310,999.94 and 123,376.78

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Solution

The fourth proportional to 225,370.86, 310,999.94 and 123,376.78 is: 170,253.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,370.86 : 310,999.94 = 123,376.78 : x
  2. Step 2: Convert to fraction form
    225,370.86/310,999.94 = 123,376.78/x
  3. Step 3: Cross multiply
    225,370.86x = 310,999.94 × 123,376.78
  4. Step 4: Simplify right side
    225,370.86x = 38,370,171,177.39
  5. Step 5: Solve for x
    x = 38,370,171,177.39/225,370.86
  6. Step 6: Final answer
    x = 170,253.47

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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.