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Finding the Fourth Proportional to 272,295.96, 408,463.47 and 72,615.30

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Solution

The fourth proportional to 272,295.96, 408,463.47 and 72,615.30 is: 108,928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,295.96 : 408,463.47 = 72,615.30 : x
  2. Step 2: Convert to fraction form
    272,295.96/408,463.47 = 72,615.30/x
  3. Step 3: Cross multiply
    272,295.96x = 408,463.47 × 72,615.30
  4. Step 4: Simplify right side
    272,295.96x = 29,660,697,413.09
  5. Step 5: Solve for x
    x = 29,660,697,413.09/272,295.96
  6. Step 6: Final answer
    x = 108,928.16

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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.