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Finding the Fourth Proportional to 285,079.69, 393,383.27 and 170,335.49

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Solution

The fourth proportional to 285,079.69, 393,383.27 and 170,335.49 is: 235,047.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079.69 : 393,383.27 = 170,335.49 : x
  2. Step 2: Convert to fraction form
    285,079.69/393,383.27 = 170,335.49/x
  3. Step 3: Cross multiply
    285,079.69x = 393,383.27 × 170,335.49
  4. Step 4: Simplify right side
    285,079.69x = 67,007,132,053.25
  5. Step 5: Solve for x
    x = 67,007,132,053.25/285,079.69
  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.