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Finding the Fourth Proportional to 445,300.16, 667,885.44 and 129,672.32

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Solution

The fourth proportional to 445,300.16, 667,885.44 and 129,672.32 is: 194,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,300.16 : 667,885.44 = 129,672.32 : x
  2. Step 2: Convert to fraction form
    445,300.16/667,885.44 = 129,672.32/x
  3. Step 3: Cross multiply
    445,300.16x = 667,885.44 × 129,672.32
  4. Step 4: Simplify right side
    445,300.16x = 86,606,254,499.02
  5. Step 5: Solve for x
    x = 86,606,254,499.02/445,300.16
  6. Step 6: Final answer
    x = 194,489.61

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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.