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Finding the Fourth Proportional to 402,552.80, 603,829.20 and 165,816.80

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Solution

The fourth proportional to 402,552.80, 603,829.20 and 165,816.80 is: 248,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,552.80 : 603,829.20 = 165,816.80 : x
  2. Step 2: Convert to fraction form
    402,552.80/603,829.20 = 165,816.80/x
  3. Step 3: Cross multiply
    402,552.80x = 603,829.20 × 165,816.80
  4. Step 4: Simplify right side
    402,552.80x = 100,125,025,690.56
  5. Step 5: Solve for x
    x = 100,125,025,690.56/402,552.80
  6. Step 6: Final answer
    x = 248,725.20

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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.