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Finding the Fourth Proportional to 347,875.36, 521,793.05 and 206,617.89

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Solution

The fourth proportional to 347,875.36, 521,793.05 and 206,617.89 is: 309,914.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,875.36 : 521,793.05 = 206,617.89 : x
  2. Step 2: Convert to fraction form
    347,875.36/521,793.05 = 206,617.89/x
  3. Step 3: Cross multiply
    347,875.36x = 521,793.05 × 206,617.89
  4. Step 4: Simplify right side
    347,875.36x = 107,811,781,480.93
  5. Step 5: Solve for x
    x = 107,811,781,480.93/347,875.36
  6. Step 6: Final answer
    x = 309,914.97

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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.