Home / 285,311.61-393,725.21-157,984.47

Finding the Fourth Proportional to 285,311.61, 393,725.21 and 157,984.47

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Solution

The fourth proportional to 285,311.61, 393,725.21 and 157,984.47 is: 218,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,311.61 : 393,725.21 = 157,984.47 : x
  2. Step 2: Convert to fraction form
    285,311.61/393,725.21 = 157,984.47/x
  3. Step 3: Cross multiply
    285,311.61x = 393,725.21 × 157,984.47
  4. Step 4: Simplify right side
    285,311.61x = 62,202,467,837.57
  5. Step 5: Solve for x
    x = 62,202,467,837.57/285,311.61
  6. Step 6: Final answer
    x = 218,015.90

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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.