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Finding the Fourth Proportional to 321,328.56, 443,332.08 and 185,344.28

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Solution

The fourth proportional to 321,328.56, 443,332.08 and 185,344.28 is: 255,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,328.56 : 443,332.08 = 185,344.28 : x
  2. Step 2: Convert to fraction form
    321,328.56/443,332.08 = 185,344.28/x
  3. Step 3: Cross multiply
    321,328.56x = 443,332.08 × 185,344.28
  4. Step 4: Simplify right side
    321,328.56x = 82,169,065,168.50
  5. Step 5: Solve for x
    x = 82,169,065,168.50/321,328.56
  6. Step 6: Final answer
    x = 255,716.66

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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.