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Finding the Fourth Proportional to 212,010.60, 318,015.90 and 54,230.70

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Solution

The fourth proportional to 212,010.60, 318,015.90 and 54,230.70 is: 81,346.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,010.60 : 318,015.90 = 54,230.70 : x
  2. Step 2: Convert to fraction form
    212,010.60/318,015.90 = 54,230.70/x
  3. Step 3: Cross multiply
    212,010.60x = 318,015.90 × 54,230.70
  4. Step 4: Simplify right side
    212,010.60x = 17,246,224,868.13
  5. Step 5: Solve for x
    x = 17,246,224,868.13/212,010.60
  6. Step 6: Final answer
    x = 81,346.05

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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.