Home / 317,984.40-476,976.60-81,314.55

Finding the Fourth Proportional to 317,984.40, 476,976.60 and 81,314.55

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Solution

The fourth proportional to 317,984.40, 476,976.60 and 81,314.55 is: 121,971.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,984.40 : 476,976.60 = 81,314.55 : x
  2. Step 2: Convert to fraction form
    317,984.40/476,976.60 = 81,314.55/x
  3. Step 3: Cross multiply
    317,984.40x = 476,976.60 × 81,314.55
  4. Step 4: Simplify right side
    317,984.40x = 38,785,137,589.53
  5. Step 5: Solve for x
    x = 38,785,137,589.53/317,984.40
  6. Step 6: Final answer
    x = 121,971.83

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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.