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Finding the Fourth Proportional to 312,246.80, 468,371.28 and 75,589.12

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Solution

The fourth proportional to 312,246.80, 468,371.28 and 75,589.12 is: 113,383.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,246.80 : 468,371.28 = 75,589.12 : x
  2. Step 2: Convert to fraction form
    312,246.80/468,371.28 = 75,589.12/x
  3. Step 3: Cross multiply
    312,246.80x = 468,371.28 × 75,589.12
  4. Step 4: Simplify right side
    312,246.80x = 35,403,772,888.47
  5. Step 5: Solve for x
    x = 35,403,772,888.47/312,246.80
  6. Step 6: Final answer
    x = 113,383.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.