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Finding the Fourth Proportional to 284,383.72, 392,473.94 and 157,083.92

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Solution

The fourth proportional to 284,383.72, 392,473.94 and 157,083.92 is: 216,789.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,383.72 : 392,473.94 = 157,083.92 : x
  2. Step 2: Convert to fraction form
    284,383.72/392,473.94 = 157,083.92/x
  3. Step 3: Cross multiply
    284,383.72x = 392,473.94 × 157,083.92
  4. Step 4: Simplify right side
    284,383.72x = 61,651,344,993.04
  5. Step 5: Solve for x
    x = 61,651,344,993.04/284,383.72
  6. Step 6: Final answer
    x = 216,789.29

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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.