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Finding the Fourth Proportional to 312,365.89, 468,548.82 and 75,708.56

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Solution

The fourth proportional to 312,365.89, 468,548.82 and 75,708.56 is: 113,562.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,365.89 : 468,548.82 = 75,708.56 : x
  2. Step 2: Convert to fraction form
    312,365.89/468,548.82 = 75,708.56/x
  3. Step 3: Cross multiply
    312,365.89x = 468,548.82 × 75,708.56
  4. Step 4: Simplify right side
    312,365.89x = 35,473,154,987.68
  5. Step 5: Solve for x
    x = 35,473,154,987.68/312,365.89
  6. Step 6: Final answer
    x = 113,562.83

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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.