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Finding the Fourth Proportional to 215,287.80, 322,931.70 and 168,580.60

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Solution

The fourth proportional to 215,287.80, 322,931.70 and 168,580.60 is: 252,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,287.80 : 322,931.70 = 168,580.60 : x
  2. Step 2: Convert to fraction form
    215,287.80/322,931.70 = 168,580.60/x
  3. Step 3: Cross multiply
    215,287.80x = 322,931.70 × 168,580.60
  4. Step 4: Simplify right side
    215,287.80x = 54,440,019,745.02
  5. Step 5: Solve for x
    x = 54,440,019,745.02/215,287.80
  6. Step 6: Final answer
    x = 252,870.90

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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.