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Finding the Fourth Proportional to 321,245, 443,324.52 and 187,117.64

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Solution

The fourth proportional to 321,245, 443,324.52 and 187,117.64 is: 258,226.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,245 : 443,324.52 = 187,117.64 : x
  2. Step 2: Convert to fraction form
    321,245/443,324.52 = 187,117.64/x
  3. Step 3: Cross multiply
    321,245x = 443,324.52 × 187,117.64
  4. Step 4: Simplify right side
    321,245x = 82,953,837,936.53
  5. Step 5: Solve for x
    x = 82,953,837,936.53/321,245
  6. Step 6: Final answer
    x = 258,226.08

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1.5x scale

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.