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Finding the Fourth Proportional to 212,489.62, 318,660.13 and 62,690.14

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Solution

The fourth proportional to 212,489.62, 318,660.13 and 62,690.14 is: 94,013.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,489.62 : 318,660.13 = 62,690.14 : x
  2. Step 2: Convert to fraction form
    212,489.62/318,660.13 = 62,690.14/x
  3. Step 3: Cross multiply
    212,489.62x = 318,660.13 × 62,690.14
  4. Step 4: Simplify right side
    212,489.62x = 19,976,848,162.12
  5. Step 5: Solve for x
    x = 19,976,848,162.12/212,489.62
  6. Step 6: Final answer
    x = 94,013.29

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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.