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Finding the Fourth Proportional to 322,400.90, 483,428.55 and 135,200.90

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Solution

The fourth proportional to 322,400.90, 483,428.55 and 135,200.90 is: 202,728.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,400.90 : 483,428.55 = 135,200.90 : x
  2. Step 2: Convert to fraction form
    322,400.90/483,428.55 = 135,200.90/x
  3. Step 3: Cross multiply
    322,400.90x = 483,428.55 × 135,200.90
  4. Step 4: Simplify right side
    322,400.90x = 65,359,975,045.70
  5. Step 5: Solve for x
    x = 65,359,975,045.70/322,400.90
  6. Step 6: Final answer
    x = 202,728.89

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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.