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Finding the Fourth Proportional to 388,769.80, 583,154.70 and 164,383.60

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Solution

The fourth proportional to 388,769.80, 583,154.70 and 164,383.60 is: 246,575.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,769.80 : 583,154.70 = 164,383.60 : x
  2. Step 2: Convert to fraction form
    388,769.80/583,154.70 = 164,383.60/x
  3. Step 3: Cross multiply
    388,769.80x = 583,154.70 × 164,383.60
  4. Step 4: Simplify right side
    388,769.80x = 95,861,068,942.92
  5. Step 5: Solve for x
    x = 95,861,068,942.92/388,769.80
  6. Step 6: Final answer
    x = 246,575.40

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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.