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Finding the Fourth Proportional to 321,201.96, 443,276.65 and 183,421.56

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Solution

The fourth proportional to 321,201.96, 443,276.65 and 183,421.56 is: 253,132.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,201.96 : 443,276.65 = 183,421.56 : x
  2. Step 2: Convert to fraction form
    321,201.96/443,276.65 = 183,421.56/x
  3. Step 3: Cross multiply
    321,201.96x = 443,276.65 × 183,421.56
  4. Step 4: Simplify right side
    321,201.96x = 81,306,496,546.14
  5. Step 5: Solve for x
    x = 81,306,496,546.14/321,201.96
  6. Step 6: Final answer
    x = 253,132.01

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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.