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Finding the Fourth Proportional to 285,424.80, 393,512.76 and 245,566.68

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Solution

The fourth proportional to 285,424.80, 393,512.76 and 245,566.68 is: 338,560.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,424.80 : 393,512.76 = 245,566.68 : x
  2. Step 2: Convert to fraction form
    285,424.80/393,512.76 = 245,566.68/x
  3. Step 3: Cross multiply
    285,424.80x = 393,512.76 × 245,566.68
  4. Step 4: Simplify right side
    285,424.80x = 96,633,622,010.84
  5. Step 5: Solve for x
    x = 96,633,622,010.84/285,424.80
  6. Step 6: Final answer
    x = 338,560.71

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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.