Home / 321,905.13-482,741.05-144,320.73

Finding the Fourth Proportional to 321,905.13, 482,741.05 and 144,320.73

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Solution

The fourth proportional to 321,905.13, 482,741.05 and 144,320.73 is: 216,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,905.13 : 482,741.05 = 144,320.73 : x
  2. Step 2: Convert to fraction form
    321,905.13/482,741.05 = 144,320.73/x
  3. Step 3: Cross multiply
    321,905.13x = 482,741.05 × 144,320.73
  4. Step 4: Simplify right side
    321,905.13x = 69,669,540,736.97
  5. Step 5: Solve for x
    x = 69,669,540,736.97/321,905.13
  6. Step 6: Final answer
    x = 216,428.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.