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Finding the Fourth Proportional to 405,956.60, 608,934.90 and 273,246.20

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Solution

The fourth proportional to 405,956.60, 608,934.90 and 273,246.20 is: 409,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,956.60 : 608,934.90 = 273,246.20 : x
  2. Step 2: Convert to fraction form
    405,956.60/608,934.90 = 273,246.20/x
  3. Step 3: Cross multiply
    405,956.60x = 608,934.90 × 273,246.20
  4. Step 4: Simplify right side
    405,956.60x = 166,389,147,472.38
  5. Step 5: Solve for x
    x = 166,389,147,472.38/405,956.60
  6. Step 6: Final answer
    x = 409,869.30

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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.