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Finding the Fourth Proportional to 331,071.62, 456,879.47 and 187,803.95

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Solution

The fourth proportional to 331,071.62, 456,879.47 and 187,803.95 is: 259,169.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,071.62 : 456,879.47 = 187,803.95 : x
  2. Step 2: Convert to fraction form
    331,071.62/456,879.47 = 187,803.95/x
  3. Step 3: Cross multiply
    331,071.62x = 456,879.47 × 187,803.95
  4. Step 4: Simplify right side
    331,071.62x = 85,803,765,916.49
  5. Step 5: Solve for x
    x = 85,803,765,916.49/331,071.62
  6. Step 6: Final answer
    x = 259,169.81

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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.