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Finding the Fourth Proportional to 483,115.29, 666,781.14 and 279,284.38

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Solution

The fourth proportional to 483,115.29, 666,781.14 and 279,284.38 is: 385,459.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,115.29 : 666,781.14 = 279,284.38 : x
  2. Step 2: Convert to fraction form
    483,115.29/666,781.14 = 279,284.38/x
  3. Step 3: Cross multiply
    483,115.29x = 666,781.14 × 279,284.38
  4. Step 4: Simplify right side
    483,115.29x = 186,221,557,280.59
  5. Step 5: Solve for x
    x = 186,221,557,280.59/483,115.29
  6. Step 6: Final answer
    x = 385,459.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.