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Finding the Fourth Proportional to 445,009.68, 667,627.52 and 129,466.28

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Solution

The fourth proportional to 445,009.68, 667,627.52 and 129,466.28 is: 194,232.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,009.68 : 667,627.52 = 129,466.28 : x
  2. Step 2: Convert to fraction form
    445,009.68/667,627.52 = 129,466.28/x
  3. Step 3: Cross multiply
    445,009.68x = 667,627.52 × 129,466.28
  4. Step 4: Simplify right side
    445,009.68x = 86,435,252,461.76
  5. Step 5: Solve for x
    x = 86,435,252,461.76/445,009.68
  6. Step 6: Final answer
    x = 194,232.30

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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.