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Finding the Fourth Proportional to 403,748.69, 605,718.21 and 226,378.13

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Solution

The fourth proportional to 403,748.69, 605,718.21 and 226,378.13 is: 339,620.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,748.69 : 605,718.21 = 226,378.13 : x
  2. Step 2: Convert to fraction form
    403,748.69/605,718.21 = 226,378.13/x
  3. Step 3: Cross multiply
    403,748.69x = 605,718.21 × 226,378.13
  4. Step 4: Simplify right side
    403,748.69x = 137,121,355,686.75
  5. Step 5: Solve for x
    x = 137,121,355,686.75/403,748.69
  6. Step 6: Final answer
    x = 339,620.56

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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.