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Finding the Fourth Proportional to 353,274.62, 529,957.49 and 128,600.46

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Solution

The fourth proportional to 353,274.62, 529,957.49 and 128,600.46 is: 192,917.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,274.62 : 529,957.49 = 128,600.46 : x
  2. Step 2: Convert to fraction form
    353,274.62/529,957.49 = 128,600.46/x
  3. Step 3: Cross multiply
    353,274.62x = 529,957.49 × 128,600.46
  4. Step 4: Simplify right side
    353,274.62x = 68,152,776,351.44
  5. Step 5: Solve for x
    x = 68,152,776,351.44/353,274.62
  6. Step 6: Final answer
    x = 192,917.28

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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.