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Finding the Fourth Proportional to 402,996.60, 603,803.70 and 192,180.60

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Solution

The fourth proportional to 402,996.60, 603,803.70 and 192,180.60 is: 287,941.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,996.60 : 603,803.70 = 192,180.60 : x
  2. Step 2: Convert to fraction form
    402,996.60/603,803.70 = 192,180.60/x
  3. Step 3: Cross multiply
    402,996.60x = 603,803.70 × 192,180.60
  4. Step 4: Simplify right side
    402,996.60x = 116,039,357,348.22
  5. Step 5: Solve for x
    x = 116,039,357,348.22/402,996.60
  6. Step 6: Final answer
    x = 287,941.28

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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.