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Finding the Fourth Proportional to 312,459.88, 468,689.82 and 75,798.76

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Solution

The fourth proportional to 312,459.88, 468,689.82 and 75,798.76 is: 113,698.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,459.88 : 468,689.82 = 75,798.76 : x
  2. Step 2: Convert to fraction form
    312,459.88/468,689.82 = 75,798.76/x
  3. Step 3: Cross multiply
    312,459.88x = 468,689.82 × 75,798.76
  4. Step 4: Simplify right side
    312,459.88x = 35,526,107,180.62
  5. Step 5: Solve for x
    x = 35,526,107,180.62/312,459.88
  6. Step 6: Final answer
    x = 113,698.14

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Similar ratio
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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.