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Finding the Fourth Proportional to 348,609.60, 521,704.80 and 208,468.80

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Solution

The fourth proportional to 348,609.60, 521,704.80 and 208,468.80 is: 311,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,609.60 : 521,704.80 = 208,468.80 : x
  2. Step 2: Convert to fraction form
    348,609.60/521,704.80 = 208,468.80/x
  3. Step 3: Cross multiply
    348,609.60x = 521,704.80 × 208,468.80
  4. Step 4: Simplify right side
    348,609.60x = 108,759,173,610.24
  5. Step 5: Solve for x
    x = 108,759,173,610.24/348,609.60
  6. Step 6: Final answer
    x = 311,979.86

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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.