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Finding the Fourth Proportional to 285,076.70, 393,379.13 and 170,332.49

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Solution

The fourth proportional to 285,076.70, 393,379.13 and 170,332.49 is: 235,042.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,076.70 : 393,379.13 = 170,332.49 : x
  2. Step 2: Convert to fraction form
    285,076.70/393,379.13 = 170,332.49/x
  3. Step 3: Cross multiply
    285,076.70x = 393,379.13 × 170,332.49
  4. Step 4: Simplify right side
    285,076.70x = 67,005,243,908.38
  5. Step 5: Solve for x
    x = 67,005,243,908.38/285,076.70
  6. Step 6: Final answer
    x = 235,042.87

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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.