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Finding the Fourth Proportional to 215,165.80, 322,748.70 and 155,722.60

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Solution

The fourth proportional to 215,165.80, 322,748.70 and 155,722.60 is: 233,583.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,165.80 : 322,748.70 = 155,722.60 : x
  2. Step 2: Convert to fraction form
    215,165.80/322,748.70 = 155,722.60/x
  3. Step 3: Cross multiply
    215,165.80x = 322,748.70 × 155,722.60
  4. Step 4: Simplify right side
    215,165.80x = 50,259,266,710.62
  5. Step 5: Solve for x
    x = 50,259,266,710.62/215,165.80
  6. Step 6: Final answer
    x = 233,583.90

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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.