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Finding the Fourth Proportional to 347,993.78, 521,993.75 and 137,631.74

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Solution

The fourth proportional to 347,993.78, 521,993.75 and 137,631.74 is: 206,448.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,993.78 : 521,993.75 = 137,631.74 : x
  2. Step 2: Convert to fraction form
    347,993.78/521,993.75 = 137,631.74/x
  3. Step 3: Cross multiply
    347,993.78x = 521,993.75 × 137,631.74
  4. Step 4: Simplify right side
    347,993.78x = 71,842,904,783.50
  5. Step 5: Solve for x
    x = 71,842,904,783.50/347,993.78
  6. Step 6: Final answer
    x = 206,448.82

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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.