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Finding the Fourth Proportional to 325,395.71, 488,408.42 and 157,034.56

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Solution

The fourth proportional to 325,395.71, 488,408.42 and 157,034.56 is: 235,703.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,395.71 : 488,408.42 = 157,034.56 : x
  2. Step 2: Convert to fraction form
    325,395.71/488,408.42 = 157,034.56/x
  3. Step 3: Cross multiply
    325,395.71x = 488,408.42 × 157,034.56
  4. Step 4: Simplify right side
    325,395.71x = 76,697,001,422.33
  5. Step 5: Solve for x
    x = 76,697,001,422.33/325,395.71
  6. Step 6: Final answer
    x = 235,703.78

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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.