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Finding the Fourth Proportional to 444,402.40, 666,538.80 and 128,826.40

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Solution

The fourth proportional to 444,402.40, 666,538.80 and 128,826.40 is: 193,220.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,402.40 : 666,538.80 = 128,826.40 : x
  2. Step 2: Convert to fraction form
    444,402.40/666,538.80 = 128,826.40/x
  3. Step 3: Cross multiply
    444,402.40x = 666,538.80 × 128,826.40
  4. Step 4: Simplify right side
    444,402.40x = 85,867,794,064.32
  5. Step 5: Solve for x
    x = 85,867,794,064.32/444,402.40
  6. Step 6: Final answer
    x = 193,220.82

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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.