Home / 297,002.20-445,503.30-86,661.40

Finding the Fourth Proportional to 297,002.20, 445,503.30 and 86,661.40

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Solution

The fourth proportional to 297,002.20, 445,503.30 and 86,661.40 is: 129,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,002.20 : 445,503.30 = 86,661.40 : x
  2. Step 2: Convert to fraction form
    297,002.20/445,503.30 = 86,661.40/x
  3. Step 3: Cross multiply
    297,002.20x = 445,503.30 × 86,661.40
  4. Step 4: Simplify right side
    297,002.20x = 38,607,939,682.62
  5. Step 5: Solve for x
    x = 38,607,939,682.62/297,002.20
  6. Step 6: Final answer
    x = 129,992.10

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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.