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Finding the Fourth Proportional to 297,007.68, 445,504.14 and 86,647.44

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Solution

The fourth proportional to 297,007.68, 445,504.14 and 86,647.44 is: 129,969.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,007.68 : 445,504.14 = 86,647.44 : x
  2. Step 2: Convert to fraction form
    297,007.68/445,504.14 = 86,647.44/x
  3. Step 3: Cross multiply
    297,007.68x = 445,504.14 × 86,647.44
  4. Step 4: Simplify right side
    297,007.68x = 38,601,793,240.40
  5. Step 5: Solve for x
    x = 38,601,793,240.40/297,007.68
  6. Step 6: Final answer
    x = 129,969.01

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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.