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Finding the Fourth Proportional to 272,172.51, 408,258.81 and 72,483.03

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Solution

The fourth proportional to 272,172.51, 408,258.81 and 72,483.03 is: 108,724.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,172.51 : 408,258.81 = 72,483.03 : x
  2. Step 2: Convert to fraction form
    272,172.51/408,258.81 = 72,483.03/x
  3. Step 3: Cross multiply
    272,172.51x = 408,258.81 × 72,483.03
  4. Step 4: Simplify right side
    272,172.51x = 29,591,835,572.99
  5. Step 5: Solve for x
    x = 29,591,835,572.99/272,172.51
  6. Step 6: Final answer
    x = 108,724.56

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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.