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Finding the Fourth Proportional to 297,002.70, 445,504.05 and 86,661.90

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Solution

The fourth proportional to 297,002.70, 445,504.05 and 86,661.90 is: 129,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,002.70 : 445,504.05 = 86,661.90 : x
  2. Step 2: Convert to fraction form
    297,002.70/445,504.05 = 86,661.90/x
  3. Step 3: Cross multiply
    297,002.70x = 445,504.05 × 86,661.90
  4. Step 4: Simplify right side
    297,002.70x = 38,608,227,430.70
  5. Step 5: Solve for x
    x = 38,608,227,430.70/297,002.70
  6. Step 6: Final answer
    x = 129,992.85

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1.5x scale

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.