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Finding the Fourth Proportional to 326,665.59, 489,894.71 and 104,997.75

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Solution

The fourth proportional to 326,665.59, 489,894.71 and 104,997.75 is: 157,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,665.59 : 489,894.71 = 104,997.75 : x
  2. Step 2: Convert to fraction form
    326,665.59/489,894.71 = 104,997.75/x
  3. Step 3: Cross multiply
    326,665.59x = 489,894.71 × 104,997.75
  4. Step 4: Simplify right side
    326,665.59x = 51,437,841,761.91
  5. Step 5: Solve for x
    x = 51,437,841,761.91/326,665.59
  6. Step 6: Final answer
    x = 157,463.30

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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.