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Finding the Fourth Proportional to 220,602.36, 330,769.89 and 99,000.60

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Solution

The fourth proportional to 220,602.36, 330,769.89 and 99,000.60 is: 148,440.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,602.36 : 330,769.89 = 99,000.60 : x
  2. Step 2: Convert to fraction form
    220,602.36/330,769.89 = 99,000.60/x
  3. Step 3: Cross multiply
    220,602.36x = 330,769.89 × 99,000.60
  4. Step 4: Simplify right side
    220,602.36x = 32,746,417,571.93
  5. Step 5: Solve for x
    x = 32,746,417,571.93/220,602.36
  6. Step 6: Final answer
    x = 148,440.92

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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.