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Finding the Fourth Proportional to 444,360.80, 666,696.72 and 128,836.64

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Solution

The fourth proportional to 444,360.80, 666,696.72 and 128,836.64 is: 193,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,360.80 : 666,696.72 = 128,836.64 : x
  2. Step 2: Convert to fraction form
    444,360.80/666,696.72 = 128,836.64/x
  3. Step 3: Cross multiply
    444,360.80x = 666,696.72 × 128,836.64
  4. Step 4: Simplify right side
    444,360.80x = 85,894,965,303.82
  5. Step 5: Solve for x
    x = 85,894,965,303.82/444,360.80
  6. Step 6: Final answer
    x = 193,300.05

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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.