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Finding the Fourth Proportional to 328,690.60, 492,747.90 and 223,167.40

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Solution

The fourth proportional to 328,690.60, 492,747.90 and 223,167.40 is: 334,555.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,690.60 : 492,747.90 = 223,167.40 : x
  2. Step 2: Convert to fraction form
    328,690.60/492,747.90 = 223,167.40/x
  3. Step 3: Cross multiply
    328,690.60x = 492,747.90 × 223,167.40
  4. Step 4: Simplify right side
    328,690.60x = 109,965,267,698.46
  5. Step 5: Solve for x
    x = 109,965,267,698.46/328,690.60
  6. Step 6: Final answer
    x = 334,555.56

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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.