Home / 431,822.61-647,593.58-143,556.87

Finding the Fourth Proportional to 431,822.61, 647,593.58 and 143,556.87

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Solution

The fourth proportional to 431,822.61, 647,593.58 and 143,556.87 is: 215,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,822.61 : 647,593.58 = 143,556.87 : x
  2. Step 2: Convert to fraction form
    431,822.61/647,593.58 = 143,556.87/x
  3. Step 3: Cross multiply
    431,822.61x = 647,593.58 × 143,556.87
  4. Step 4: Simplify right side
    431,822.61x = 92,966,506,659.11
  5. Step 5: Solve for x
    x = 92,966,506,659.11/431,822.61
  6. Step 6: Final answer
    x = 215,288.65

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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.