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Finding the Fourth Proportional to 225,348.20, 310,980.56 and 123,380.13

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Solution

The fourth proportional to 225,348.20, 310,980.56 and 123,380.13 is: 170,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,348.20 : 310,980.56 = 123,380.13 : x
  2. Step 2: Convert to fraction form
    225,348.20/310,980.56 = 123,380.13/x
  3. Step 3: Cross multiply
    225,348.20x = 310,980.56 × 123,380.13
  4. Step 4: Simplify right side
    225,348.20x = 38,368,821,920.27
  5. Step 5: Solve for x
    x = 38,368,821,920.27/225,348.20
  6. Step 6: Final answer
    x = 170,264.60

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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.