Home / 225,238.05-310,815.12-123,243.15

Finding the Fourth Proportional to 225,238.05, 310,815.12 and 123,243.15

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Solution

The fourth proportional to 225,238.05, 310,815.12 and 123,243.15 is: 170,068.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,238.05 : 310,815.12 = 123,243.15 : x
  2. Step 2: Convert to fraction form
    225,238.05/310,815.12 = 123,243.15/x
  3. Step 3: Cross multiply
    225,238.05x = 310,815.12 × 123,243.15
  4. Step 4: Simplify right side
    225,238.05x = 38,305,836,084.15
  5. Step 5: Solve for x
    x = 38,305,836,084.15/225,238.05
  6. Step 6: Final answer
    x = 170,068.23

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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.