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Finding the Fourth Proportional to 212,442.48, 318,680.10 and 54,672.48

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Solution

The fourth proportional to 212,442.48, 318,680.10 and 54,672.48 is: 82,012.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,442.48 : 318,680.10 = 54,672.48 : x
  2. Step 2: Convert to fraction form
    212,442.48/318,680.10 = 54,672.48/x
  3. Step 3: Cross multiply
    212,442.48x = 318,680.10 × 54,672.48
  4. Step 4: Simplify right side
    212,442.48x = 17,423,031,393.65
  5. Step 5: Solve for x
    x = 17,423,031,393.65/212,442.48
  6. Step 6: Final answer
    x = 82,012.94

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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.