Home / 429,022.47-643,703-162,853.63

Finding the Fourth Proportional to 429,022.47, 643,703 and 162,853.63

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Solution

The fourth proportional to 429,022.47, 643,703 and 162,853.63 is: 244,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,022.47 : 643,703 = 162,853.63 : x
  2. Step 2: Convert to fraction form
    429,022.47/643,703 = 162,853.63/x
  3. Step 3: Cross multiply
    429,022.47x = 643,703 × 162,853.63
  4. Step 4: Simplify right side
    429,022.47x = 104,829,370,191.89
  5. Step 5: Solve for x
    x = 104,829,370,191.89/429,022.47
  6. Step 6: Final answer
    x = 244,344.71

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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.