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Finding the Fourth Proportional to 272,606.92, 408,906.72 and 70,201.90

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Solution

The fourth proportional to 272,606.92, 408,906.72 and 70,201.90 is: 105,301.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,606.92 : 408,906.72 = 70,201.90 : x
  2. Step 2: Convert to fraction form
    272,606.92/408,906.72 = 70,201.90/x
  3. Step 3: Cross multiply
    272,606.92x = 408,906.72 × 70,201.90
  4. Step 4: Simplify right side
    272,606.92x = 28,706,028,666.77
  5. Step 5: Solve for x
    x = 28,706,028,666.77/272,606.92
  6. Step 6: Final answer
    x = 105,301.91

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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.