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Finding the Fourth Proportional to 403,339.34, 605,383.08 and 203,799.86

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Solution

The fourth proportional to 403,339.34, 605,383.08 and 203,799.86 is: 305,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,339.34 : 605,383.08 = 203,799.86 : x
  2. Step 2: Convert to fraction form
    403,339.34/605,383.08 = 203,799.86/x
  3. Step 3: Cross multiply
    403,339.34x = 605,383.08 × 203,799.86
  4. Step 4: Simplify right side
    403,339.34x = 123,376,986,950.37
  5. Step 5: Solve for x
    x = 123,376,986,950.37/403,339.34
  6. Step 6: Final answer
    x = 305,888.80

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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.