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Finding the Fourth Proportional to 309,676.97, 427,332.10 and 171,863.29

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Solution

The fourth proportional to 309,676.97, 427,332.10 and 171,863.29 is: 237,159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,676.97 : 427,332.10 = 171,863.29 : x
  2. Step 2: Convert to fraction form
    309,676.97/427,332.10 = 171,863.29/x
  3. Step 3: Cross multiply
    309,676.97x = 427,332.10 × 171,863.29
  4. Step 4: Simplify right side
    309,676.97x = 73,442,699,769.29
  5. Step 5: Solve for x
    x = 73,442,699,769.29/309,676.97
  6. Step 6: Final answer
    x = 237,159.06

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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.