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Finding the Fourth Proportional to 212,471.78, 318,672.03 and 62,709.26

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Solution

The fourth proportional to 212,471.78, 318,672.03 and 62,709.26 is: 94,053.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,471.78 : 318,672.03 = 62,709.26 : x
  2. Step 2: Convert to fraction form
    212,471.78/318,672.03 = 62,709.26/x
  3. Step 3: Cross multiply
    212,471.78x = 318,672.03 × 62,709.26
  4. Step 4: Simplify right side
    212,471.78x = 19,983,687,184.00
  5. Step 5: Solve for x
    x = 19,983,687,184.00/212,471.78
  6. Step 6: Final answer
    x = 94,053.37

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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.