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Finding the Fourth Proportional to 638,337.24, 957,256.73 and 278,618.11

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Solution

The fourth proportional to 638,337.24, 957,256.73 and 278,618.11 is: 417,818.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,337.24 : 957,256.73 = 278,618.11 : x
  2. Step 2: Convert to fraction form
    638,337.24/957,256.73 = 278,618.11/x
  3. Step 3: Cross multiply
    638,337.24x = 957,256.73 × 278,618.11
  4. Step 4: Simplify right side
    638,337.24x = 266,709,058,155.97
  5. Step 5: Solve for x
    x = 266,709,058,155.97/638,337.24
  6. Step 6: Final answer
    x = 417,818.42

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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.