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Finding the Fourth Proportional to 212,270.88, 318,143.88 and 107,119.92

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Solution

The fourth proportional to 212,270.88, 318,143.88 and 107,119.92 is: 160,547.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,270.88 : 318,143.88 = 107,119.92 : x
  2. Step 2: Convert to fraction form
    212,270.88/318,143.88 = 107,119.92/x
  3. Step 3: Cross multiply
    212,270.88x = 318,143.88 × 107,119.92
  4. Step 4: Simplify right side
    212,270.88x = 34,079,546,974.09
  5. Step 5: Solve for x
    x = 34,079,546,974.09/212,270.88
  6. Step 6: Final answer
    x = 160,547.44

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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.