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Finding the Fourth Proportional to 212,773.74, 319,126.05 and 100,453.74

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Solution

The fourth proportional to 212,773.74, 319,126.05 and 100,453.74 is: 150,664.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,773.74 : 319,126.05 = 100,453.74 : x
  2. Step 2: Convert to fraction form
    212,773.74/319,126.05 = 100,453.74/x
  3. Step 3: Cross multiply
    212,773.74x = 319,126.05 × 100,453.74
  4. Step 4: Simplify right side
    212,773.74x = 32,057,405,253.93
  5. Step 5: Solve for x
    x = 32,057,405,253.93/212,773.74
  6. Step 6: Final answer
    x = 150,664.29

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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.