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Finding the Fourth Proportional to 638,016.62, 957,173.01 and 217,296.14

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Solution

The fourth proportional to 638,016.62, 957,173.01 and 217,296.14 is: 325,994.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,016.62 : 957,173.01 = 217,296.14 : x
  2. Step 2: Convert to fraction form
    638,016.62/957,173.01 = 217,296.14/x
  3. Step 3: Cross multiply
    638,016.62x = 957,173.01 × 217,296.14
  4. Step 4: Simplify right side
    638,016.62x = 207,990,000,385.18
  5. Step 5: Solve for x
    x = 207,990,000,385.18/638,016.62
  6. Step 6: Final answer
    x = 325,994.64

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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.