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Finding the Fourth Proportional to 297,059.10, 445,653.45 and 86,679.90

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Solution

The fourth proportional to 297,059.10, 445,653.45 and 86,679.90 is: 130,038.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,059.10 : 445,653.45 = 86,679.90 : x
  2. Step 2: Convert to fraction form
    297,059.10/445,653.45 = 86,679.90/x
  3. Step 3: Cross multiply
    297,059.10x = 445,653.45 × 86,679.90
  4. Step 4: Simplify right side
    297,059.10x = 38,629,196,480.66
  5. Step 5: Solve for x
    x = 38,629,196,480.66/297,059.10
  6. Step 6: Final answer
    x = 130,038.76

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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.