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Finding the Fourth Proportional to 402,936.60, 603,713.70 and 192,120.60

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Solution

The fourth proportional to 402,936.60, 603,713.70 and 192,120.60 is: 287,851.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,936.60 : 603,713.70 = 192,120.60 : x
  2. Step 2: Convert to fraction form
    402,936.60/603,713.70 = 192,120.60/x
  3. Step 3: Cross multiply
    402,936.60x = 603,713.70 × 192,120.60
  4. Step 4: Simplify right side
    402,936.60x = 115,985,838,272.22
  5. Step 5: Solve for x
    x = 115,985,838,272.22/402,936.60
  6. Step 6: Final answer
    x = 287,851.34

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1.5x scale

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.