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Finding the Fourth Proportional to 353,291.72, 529,943.70 and 100,578.80

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Solution

The fourth proportional to 353,291.72, 529,943.70 and 100,578.80 is: 150,869.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,291.72 : 529,943.70 = 100,578.80 : x
  2. Step 2: Convert to fraction form
    353,291.72/529,943.70 = 100,578.80/x
  3. Step 3: Cross multiply
    353,291.72x = 529,943.70 × 100,578.80
  4. Step 4: Simplify right side
    353,291.72x = 53,301,101,413.56
  5. Step 5: Solve for x
    x = 53,301,101,413.56/353,291.72
  6. Step 6: Final answer
    x = 150,869.94

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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.