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Finding the Fourth Proportional to 212,442.99, 318,861.59 and 107,335.77

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Solution

The fourth proportional to 212,442.99, 318,861.59 and 107,335.77 is: 161,103.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,442.99 : 318,861.59 = 107,335.77 : x
  2. Step 2: Convert to fraction form
    212,442.99/318,861.59 = 107,335.77/x
  3. Step 3: Cross multiply
    212,442.99x = 318,861.59 × 107,335.77
  4. Step 4: Simplify right side
    212,442.99x = 34,225,253,749.40
  5. Step 5: Solve for x
    x = 34,225,253,749.40/212,442.99
  6. Step 6: Final answer
    x = 161,103.24

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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.