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Finding the Fourth Proportional to 237,987, 356,981.61 and 80,216.82

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Solution

The fourth proportional to 237,987, 356,981.61 and 80,216.82 is: 120,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,987 : 356,981.61 = 80,216.82 : x
  2. Step 2: Convert to fraction form
    237,987/356,981.61 = 80,216.82/x
  3. Step 3: Cross multiply
    237,987x = 356,981.61 × 80,216.82
  4. Step 4: Simplify right side
    237,987x = 28,635,929,552.68
  5. Step 5: Solve for x
    x = 28,635,929,552.68/237,987
  6. Step 6: Final answer
    x = 120,325.60

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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.