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Finding the Fourth Proportional to 321,326.56, 443,329.32 and 185,342.28

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Solution

The fourth proportional to 321,326.56, 443,329.32 and 185,342.28 is: 255,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,326.56 : 443,329.32 = 185,342.28 : x
  2. Step 2: Convert to fraction form
    321,326.56/443,329.32 = 185,342.28/x
  3. Step 3: Cross multiply
    321,326.56x = 443,329.32 × 185,342.28
  4. Step 4: Simplify right side
    321,326.56x = 82,167,666,959.65
  5. Step 5: Solve for x
    x = 82,167,666,959.65/321,326.56
  6. Step 6: Final answer
    x = 255,713.90

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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.