Home / 285,273.38-393,689.57-157,948.97

Finding the Fourth Proportional to 285,273.38, 393,689.57 and 157,948.97

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Solution

The fourth proportional to 285,273.38, 393,689.57 and 157,948.97 is: 217,976.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,273.38 : 393,689.57 = 157,948.97 : x
  2. Step 2: Convert to fraction form
    285,273.38/393,689.57 = 157,948.97/x
  3. Step 3: Cross multiply
    285,273.38x = 393,689.57 × 157,948.97
  4. Step 4: Simplify right side
    285,273.38x = 62,182,859,323.05
  5. Step 5: Solve for x
    x = 62,182,859,323.05/285,273.38
  6. Step 6: Final answer
    x = 217,976.39

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1.5x scale

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.