Home / 429,013.11-643,689.17-162,844.28

Finding the Fourth Proportional to 429,013.11, 643,689.17 and 162,844.28

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Solution

The fourth proportional to 429,013.11, 643,689.17 and 162,844.28 is: 244,330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,013.11 : 643,689.17 = 162,844.28 : x
  2. Step 2: Convert to fraction form
    429,013.11/643,689.17 = 162,844.28/x
  3. Step 3: Cross multiply
    429,013.11x = 643,689.17 × 162,844.28
  4. Step 4: Simplify right side
    429,013.11x = 104,821,098,424.28
  5. Step 5: Solve for x
    x = 104,821,098,424.28/429,013.11
  6. Step 6: Final answer
    x = 244,330.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.