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Finding the Fourth Proportional to 214,715.70, 322,073.55 and 212,747.40

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Solution

The fourth proportional to 214,715.70, 322,073.55 and 212,747.40 is: 319,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,715.70 : 322,073.55 = 212,747.40 : x
  2. Step 2: Convert to fraction form
    214,715.70/322,073.55 = 212,747.40/x
  3. Step 3: Cross multiply
    214,715.70x = 322,073.55 × 212,747.40
  4. Step 4: Simplify right side
    214,715.70x = 68,520,310,371.27
  5. Step 5: Solve for x
    x = 68,520,310,371.27/214,715.70
  6. Step 6: Final answer
    x = 319,121.10

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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.