Home / 285,311.25-393,724.68-157,984.11

Finding the Fourth Proportional to 285,311.25, 393,724.68 and 157,984.11

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Solution

The fourth proportional to 285,311.25, 393,724.68 and 157,984.11 is: 218,015.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,311.25 : 393,724.68 = 157,984.11 : x
  2. Step 2: Convert to fraction form
    285,311.25/393,724.68 = 157,984.11/x
  3. Step 3: Cross multiply
    285,311.25x = 393,724.68 × 157,984.11
  4. Step 4: Simplify right side
    285,311.25x = 62,202,243,154.83
  5. Step 5: Solve for x
    x = 62,202,243,154.83/285,311.25
  6. Step 6: Final answer
    x = 218,015.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.