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Finding the Fourth Proportional to 403,383.66, 605,069.96 and 137,329.71

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Solution

The fourth proportional to 403,383.66, 605,069.96 and 137,329.71 is: 205,992.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,383.66 : 605,069.96 = 137,329.71 : x
  2. Step 2: Convert to fraction form
    403,383.66/605,069.96 = 137,329.71/x
  3. Step 3: Cross multiply
    403,383.66x = 605,069.96 × 137,329.71
  4. Step 4: Simplify right side
    403,383.66x = 83,094,081,449.86
  5. Step 5: Solve for x
    x = 83,094,081,449.86/403,383.66
  6. Step 6: Final answer
    x = 205,992.68

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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.