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Finding the Fourth Proportional to 225,245, 310,847.82 and 124,643

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Solution

The fourth proportional to 225,245, 310,847.82 and 124,643 is: 172,012.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,245 : 310,847.82 = 124,643 : x
  2. Step 2: Convert to fraction form
    225,245/310,847.82 = 124,643/x
  3. Step 3: Cross multiply
    225,245x = 310,847.82 × 124,643
  4. Step 4: Simplify right side
    225,245x = 38,745,004,828.26
  5. Step 5: Solve for x
    x = 38,745,004,828.26/225,245
  6. Step 6: Final answer
    x = 172,012.72

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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.