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Finding the Fourth Proportional to 217,624.64, 325,795.44 and 212,259.20

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Solution

The fourth proportional to 217,624.64, 325,795.44 and 212,259.20 is: 317,763.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,624.64 : 325,795.44 = 212,259.20 : x
  2. Step 2: Convert to fraction form
    217,624.64/325,795.44 = 212,259.20/x
  3. Step 3: Cross multiply
    217,624.64x = 325,795.44 × 212,259.20
  4. Step 4: Simplify right side
    217,624.64x = 69,153,079,458.05
  5. Step 5: Solve for x
    x = 69,153,079,458.05/217,624.64
  6. Step 6: Final answer
    x = 317,763.10

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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.