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Finding the Fourth Proportional to 212,818.68, 319,234.68 and 79,673.49

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Solution

The fourth proportional to 212,818.68, 319,234.68 and 79,673.49 is: 119,512.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,818.68 : 319,234.68 = 79,673.49 : x
  2. Step 2: Convert to fraction form
    212,818.68/319,234.68 = 79,673.49/x
  3. Step 3: Cross multiply
    212,818.68x = 319,234.68 × 79,673.49
  4. Step 4: Simplify right side
    212,818.68x = 25,434,541,084.63
  5. Step 5: Solve for x
    x = 25,434,541,084.63/212,818.68
  6. Step 6: Final answer
    x = 119,512.73

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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.