Home / 285,104.41-393,456.44-157,780.05

Finding the Fourth Proportional to 285,104.41, 393,456.44 and 157,780.05

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Solution

The fourth proportional to 285,104.41, 393,456.44 and 157,780.05 is: 217,743.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,104.41 : 393,456.44 = 157,780.05 : x
  2. Step 2: Convert to fraction form
    285,104.41/393,456.44 = 157,780.05/x
  3. Step 3: Cross multiply
    285,104.41x = 393,456.44 × 157,780.05
  4. Step 4: Simplify right side
    285,104.41x = 62,079,574,019.84
  5. Step 5: Solve for x
    x = 62,079,574,019.84/285,104.41
  6. Step 6: Final answer
    x = 217,743.30

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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.