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Finding the Fourth Proportional to 225,302.31, 310,917.29 and 129,808.17

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Solution

The fourth proportional to 225,302.31, 310,917.29 and 129,808.17 is: 179,135.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,302.31 : 310,917.29 = 129,808.17 : x
  2. Step 2: Convert to fraction form
    225,302.31/310,917.29 = 129,808.17/x
  3. Step 3: Cross multiply
    225,302.31x = 310,917.29 × 129,808.17
  4. Step 4: Simplify right side
    225,302.31x = 40,359,603,787.22
  5. Step 5: Solve for x
    x = 40,359,603,787.22/225,302.31
  6. Step 6: Final answer
    x = 179,135.33

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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.