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Finding the Fourth Proportional to 297,003.67, 445,498.14 and 86,643.43

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Solution

The fourth proportional to 297,003.67, 445,498.14 and 86,643.43 is: 129,963.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,003.67 : 445,498.14 = 86,643.43 : x
  2. Step 2: Convert to fraction form
    297,003.67/445,498.14 = 86,643.43/x
  3. Step 3: Cross multiply
    297,003.67x = 445,498.14 × 86,643.43
  4. Step 4: Simplify right side
    297,003.67x = 38,599,486,908.22
  5. Step 5: Solve for x
    x = 38,599,486,908.22/297,003.67
  6. Step 6: Final answer
    x = 129,963.00

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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.