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Finding the Fourth Proportional to 321,143.59, 443,179.85 and 181,442.81

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Solution

The fourth proportional to 321,143.59, 443,179.85 and 181,442.81 is: 250,392.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,143.59 : 443,179.85 = 181,442.81 : x
  2. Step 2: Convert to fraction form
    321,143.59/443,179.85 = 181,442.81/x
  3. Step 3: Cross multiply
    321,143.59x = 443,179.85 × 181,442.81
  4. Step 4: Simplify right side
    321,143.59x = 80,411,796,412.16
  5. Step 5: Solve for x
    x = 80,411,796,412.16/321,143.59
  6. Step 6: Final answer
    x = 250,392.03

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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.