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Finding the Fourth Proportional to 272,588.99, 408,883.37 and 72,904.19

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Solution

The fourth proportional to 272,588.99, 408,883.37 and 72,904.19 is: 109,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,588.99 : 408,883.37 = 72,904.19 : x
  2. Step 2: Convert to fraction form
    272,588.99/408,883.37 = 72,904.19/x
  3. Step 3: Cross multiply
    272,588.99x = 408,883.37 × 72,904.19
  4. Step 4: Simplify right side
    272,588.99x = 29,809,308,485.38
  5. Step 5: Solve for x
    x = 29,809,308,485.38/272,588.99
  6. Step 6: Final answer
    x = 109,356.25

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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.