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Finding the Fourth Proportional to 445,071.51, 667,630.35 and 129,553.02

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Solution

The fourth proportional to 445,071.51, 667,630.35 and 129,553.02 is: 194,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,071.51 : 667,630.35 = 129,553.02 : x
  2. Step 2: Convert to fraction form
    445,071.51/667,630.35 = 129,553.02/x
  3. Step 3: Cross multiply
    445,071.51x = 667,630.35 × 129,553.02
  4. Step 4: Simplify right side
    445,071.51x = 86,493,528,086.16
  5. Step 5: Solve for x
    x = 86,493,528,086.16/445,071.51
  6. Step 6: Final answer
    x = 194,336.25

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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.