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Finding the Fourth Proportional to 321,690.93, 443,954.52 and 185,730.61

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Solution

The fourth proportional to 321,690.93, 443,954.52 and 185,730.61 is: 256,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,690.93 : 443,954.52 = 185,730.61 : x
  2. Step 2: Convert to fraction form
    321,690.93/443,954.52 = 185,730.61/x
  3. Step 3: Cross multiply
    321,690.93x = 443,954.52 × 185,730.61
  4. Step 4: Simplify right side
    321,690.93x = 82,455,943,811.86
  5. Step 5: Solve for x
    x = 82,455,943,811.86/321,690.93
  6. Step 6: Final answer
    x = 256,320.39

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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.