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Finding the Fourth Proportional to 638,288.08, 957,722.78 and 238,959.97

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Solution

The fourth proportional to 638,288.08, 957,722.78 and 238,959.97 is: 358,548.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,288.08 : 957,722.78 = 238,959.97 : x
  2. Step 2: Convert to fraction form
    638,288.08/957,722.78 = 238,959.97/x
  3. Step 3: Cross multiply
    638,288.08x = 957,722.78 × 238,959.97
  4. Step 4: Simplify right side
    638,288.08x = 228,857,406,777.12
  5. Step 5: Solve for x
    x = 228,857,406,777.12/638,288.08
  6. Step 6: Final answer
    x = 358,548.77

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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.