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Finding the Fourth Proportional to 285,079.70, 393,383.26 and 170,335.50

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Solution

The fourth proportional to 285,079.70, 393,383.26 and 170,335.50 is: 235,047.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079.70 : 393,383.26 = 170,335.50 : x
  2. Step 2: Convert to fraction form
    285,079.70/393,383.26 = 170,335.50/x
  3. Step 3: Cross multiply
    285,079.70x = 393,383.26 × 170,335.50
  4. Step 4: Simplify right side
    285,079.70x = 67,007,134,283.73
  5. Step 5: Solve for x
    x = 67,007,134,283.73/285,079.70
  6. Step 6: Final answer
    x = 235,047.02

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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.