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Finding the Fourth Proportional to 322,315.56, 483,428.70 and 85,677.48

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Solution

The fourth proportional to 322,315.56, 483,428.70 and 85,677.48 is: 128,504.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,315.56 : 483,428.70 = 85,677.48 : x
  2. Step 2: Convert to fraction form
    322,315.56/483,428.70 = 85,677.48/x
  3. Step 3: Cross multiply
    322,315.56x = 483,428.70 × 85,677.48
  4. Step 4: Simplify right side
    322,315.56x = 41,418,952,775.68
  5. Step 5: Solve for x
    x = 41,418,952,775.68/322,315.56
  6. Step 6: Final answer
    x = 128,504.35

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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.