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Finding the Fourth Proportional to 403,590.40, 605,385.60 and 226,443.40

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Solution

The fourth proportional to 403,590.40, 605,385.60 and 226,443.40 is: 339,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,590.40 : 605,385.60 = 226,443.40 : x
  2. Step 2: Convert to fraction form
    403,590.40/605,385.60 = 226,443.40/x
  3. Step 3: Cross multiply
    403,590.40x = 605,385.60 × 226,443.40
  4. Step 4: Simplify right side
    403,590.40x = 137,085,573,575.04
  5. Step 5: Solve for x
    x = 137,085,573,575.04/403,590.40
  6. Step 6: Final answer
    x = 339,665.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.