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Finding the Fourth Proportional to 444,034.60, 666,138.30 and 128,501.80

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Solution

The fourth proportional to 444,034.60, 666,138.30 and 128,501.80 is: 192,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,034.60 : 666,138.30 = 128,501.80 : x
  2. Step 2: Convert to fraction form
    444,034.60/666,138.30 = 128,501.80/x
  3. Step 3: Cross multiply
    444,034.60x = 666,138.30 × 128,501.80
  4. Step 4: Simplify right side
    444,034.60x = 85,599,970,598.94
  5. Step 5: Solve for x
    x = 85,599,970,598.94/444,034.60
  6. Step 6: Final answer
    x = 192,777.70

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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.