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Finding the Fourth Proportional to 212,408.87, 318,810.20 and 107,301.65

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Solution

The fourth proportional to 212,408.87, 318,810.20 and 107,301.65 is: 161,051.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,408.87 : 318,810.20 = 107,301.65 : x
  2. Step 2: Convert to fraction form
    212,408.87/318,810.20 = 107,301.65/x
  3. Step 3: Cross multiply
    212,408.87x = 318,810.20 × 107,301.65
  4. Step 4: Simplify right side
    212,408.87x = 34,208,858,366.27
  5. Step 5: Solve for x
    x = 34,208,858,366.27/212,408.87
  6. Step 6: Final answer
    x = 161,051.93

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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.