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Finding the Fourth Proportional to 402,553.19, 603,903.60 and 165,766.70

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Solution

The fourth proportional to 402,553.19, 603,903.60 and 165,766.70 is: 248,680.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,553.19 : 603,903.60 = 165,766.70 : x
  2. Step 2: Convert to fraction form
    402,553.19/603,903.60 = 165,766.70/x
  3. Step 3: Cross multiply
    402,553.19x = 603,903.60 × 165,766.70
  4. Step 4: Simplify right side
    402,553.19x = 100,107,108,399.88
  5. Step 5: Solve for x
    x = 100,107,108,399.88/402,553.19
  6. Step 6: Final answer
    x = 248,680.45

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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.