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Finding the Fourth Proportional to 225,867.84, 311,700 and 125,272.32

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Solution

The fourth proportional to 225,867.84, 311,700 and 125,272.32 is: 172,877.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,867.84 : 311,700 = 125,272.32 : x
  2. Step 2: Convert to fraction form
    225,867.84/311,700 = 125,272.32/x
  3. Step 3: Cross multiply
    225,867.84x = 311,700 × 125,272.32
  4. Step 4: Simplify right side
    225,867.84x = 39,047,382,144
  5. Step 5: Solve for x
    x = 39,047,382,144/225,867.84
  6. Step 6: Final answer
    x = 172,877.12

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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.