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Finding the Fourth Proportional to 291,704.80, 437,654.40 and 260,348.80

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Solution

The fourth proportional to 291,704.80, 437,654.40 and 260,348.80 is: 390,609.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,704.80 : 437,654.40 = 260,348.80 : x
  2. Step 2: Convert to fraction form
    291,704.80/437,654.40 = 260,348.80/x
  3. Step 3: Cross multiply
    291,704.80x = 437,654.40 × 260,348.80
  4. Step 4: Simplify right side
    291,704.80x = 113,942,797,854.72
  5. Step 5: Solve for x
    x = 113,942,797,854.72/291,704.80
  6. Step 6: Final answer
    x = 390,609.95

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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.