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Finding the Fourth Proportional to 297,052.60, 445,578.90 and 86,711.80

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Solution

The fourth proportional to 297,052.60, 445,578.90 and 86,711.80 is: 130,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,052.60 : 445,578.90 = 86,711.80 : x
  2. Step 2: Convert to fraction form
    297,052.60/445,578.90 = 86,711.80/x
  3. Step 3: Cross multiply
    297,052.60x = 445,578.90 × 86,711.80
  4. Step 4: Simplify right side
    297,052.60x = 38,636,948,461.02
  5. Step 5: Solve for x
    x = 38,636,948,461.02/297,052.60
  6. Step 6: Final answer
    x = 130,067.70

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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.