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Finding the Fourth Proportional to 363,605.80, 545,408.70 and 223,443.40

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Solution

The fourth proportional to 363,605.80, 545,408.70 and 223,443.40 is: 335,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,605.80 : 545,408.70 = 223,443.40 : x
  2. Step 2: Convert to fraction form
    363,605.80/545,408.70 = 223,443.40/x
  3. Step 3: Cross multiply
    363,605.80x = 545,408.70 × 223,443.40
  4. Step 4: Simplify right side
    363,605.80x = 121,867,974,317.58
  5. Step 5: Solve for x
    x = 121,867,974,317.58/363,605.80
  6. Step 6: Final answer
    x = 335,165.10

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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.