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Finding the Fourth Proportional to 220,259.88, 330,440.76 and 78,097.62

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Solution

The fourth proportional to 220,259.88, 330,440.76 and 78,097.62 is: 117,164.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,259.88 : 330,440.76 = 78,097.62 : x
  2. Step 2: Convert to fraction form
    220,259.88/330,440.76 = 78,097.62/x
  3. Step 3: Cross multiply
    220,259.88x = 330,440.76 × 78,097.62
  4. Step 4: Simplify right side
    220,259.88x = 25,806,636,906.99
  5. Step 5: Solve for x
    x = 25,806,636,906.99/220,259.88
  6. Step 6: Final answer
    x = 117,164.49

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1.5x scale

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.