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Finding the Fourth Proportional to 225,239.67, 310,899.94 and 129,809.93

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Solution

The fourth proportional to 225,239.67, 310,899.94 and 129,809.93 is: 179,177.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,239.67 : 310,899.94 = 129,809.93 : x
  2. Step 2: Convert to fraction form
    225,239.67/310,899.94 = 129,809.93/x
  3. Step 3: Cross multiply
    225,239.67x = 310,899.94 × 129,809.93
  4. Step 4: Simplify right side
    225,239.67x = 40,357,897,569.38
  5. Step 5: Solve for x
    x = 40,357,897,569.38/225,239.67
  6. Step 6: Final answer
    x = 179,177.57

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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.