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Finding the Fourth Proportional to 321,048.49, 443,042.45 and 185,082.70

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Solution

The fourth proportional to 321,048.49, 443,042.45 and 185,082.70 is: 255,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,048.49 : 443,042.45 = 185,082.70 : x
  2. Step 2: Convert to fraction form
    321,048.49/443,042.45 = 185,082.70/x
  3. Step 3: Cross multiply
    321,048.49x = 443,042.45 × 185,082.70
  4. Step 4: Simplify right side
    321,048.49x = 81,999,491,935.20
  5. Step 5: Solve for x
    x = 81,999,491,935.20/321,048.49
  6. Step 6: Final answer
    x = 255,411.55

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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.