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Finding the Fourth Proportional to 259,221.96, 388,819.98 and 101,479.32

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Solution

The fourth proportional to 259,221.96, 388,819.98 and 101,479.32 is: 152,213.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,221.96 : 388,819.98 = 101,479.32 : x
  2. Step 2: Convert to fraction form
    259,221.96/388,819.98 = 101,479.32/x
  3. Step 3: Cross multiply
    259,221.96x = 388,819.98 × 101,479.32
  4. Step 4: Simplify right side
    259,221.96x = 39,457,187,172.81
  5. Step 5: Solve for x
    x = 39,457,187,172.81/259,221.96
  6. Step 6: Final answer
    x = 152,213.91

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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.