Home / 487,056.72-672,125.67-272,198.55

Finding the Fourth Proportional to 487,056.72, 672,125.67 and 272,198.55

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Solution

The fourth proportional to 487,056.72, 672,125.67 and 272,198.55 is: 375,626.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,056.72 : 672,125.67 = 272,198.55 : x
  2. Step 2: Convert to fraction form
    487,056.72/672,125.67 = 272,198.55/x
  3. Step 3: Cross multiply
    487,056.72x = 672,125.67 × 272,198.55
  4. Step 4: Simplify right side
    487,056.72x = 182,951,632,791.78
  5. Step 5: Solve for x
    x = 182,951,632,791.78/487,056.72
  6. Step 6: Final answer
    x = 375,626.96

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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.