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Finding the Fourth Proportional to 402,286.40, 603,769.80 and 165,798.80

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Solution

The fourth proportional to 402,286.40, 603,769.80 and 165,798.80 is: 248,838.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,286.40 : 603,769.80 = 165,798.80 : x
  2. Step 2: Convert to fraction form
    402,286.40/603,769.80 = 165,798.80/x
  3. Step 3: Cross multiply
    402,286.40x = 603,769.80 × 165,798.80
  4. Step 4: Simplify right side
    402,286.40x = 100,104,308,316.24
  5. Step 5: Solve for x
    x = 100,104,308,316.24/402,286.40
  6. Step 6: Final answer
    x = 248,838.41

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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.