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Finding the Fourth Proportional to 403,493.66, 556,822.91 and 231,418.27

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Solution

The fourth proportional to 403,493.66, 556,822.91 and 231,418.27 is: 319,358.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,493.66 : 556,822.91 = 231,418.27 : x
  2. Step 2: Convert to fraction form
    403,493.66/556,822.91 = 231,418.27/x
  3. Step 3: Cross multiply
    403,493.66x = 556,822.91 × 231,418.27
  4. Step 4: Simplify right side
    403,493.66x = 128,858,993,715.05
  5. Step 5: Solve for x
    x = 128,858,993,715.05/403,493.66
  6. Step 6: Final answer
    x = 319,358.17

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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.