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Finding the Fourth Proportional to 212,360.73, 318,257.99 and 79,106.82

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Solution

The fourth proportional to 212,360.73, 318,257.99 and 79,106.82 is: 118,554.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,360.73 : 318,257.99 = 79,106.82 : x
  2. Step 2: Convert to fraction form
    212,360.73/318,257.99 = 79,106.82/x
  3. Step 3: Cross multiply
    212,360.73x = 318,257.99 × 79,106.82
  4. Step 4: Simplify right side
    212,360.73x = 25,176,377,528.49
  5. Step 5: Solve for x
    x = 25,176,377,528.49/212,360.73
  6. Step 6: Final answer
    x = 118,554.77

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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.