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Finding the Fourth Proportional to 612,162, 917,717.10 and 212,750.88

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Solution

The fourth proportional to 612,162, 917,717.10 and 212,750.88 is: 318,943.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,162 : 917,717.10 = 212,750.88 : x
  2. Step 2: Convert to fraction form
    612,162/917,717.10 = 212,750.88/x
  3. Step 3: Cross multiply
    612,162x = 917,717.10 × 212,750.88
  4. Step 4: Simplify right side
    612,162x = 195,245,120,616.05
  5. Step 5: Solve for x
    x = 195,245,120,616.05/612,162
  6. Step 6: Final answer
    x = 318,943.55

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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.