Home / 298,002.20-447,003.30-87,661.40

Finding the Fourth Proportional to 298,002.20, 447,003.30 and 87,661.40

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Solution

The fourth proportional to 298,002.20, 447,003.30 and 87,661.40 is: 131,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,002.20 : 447,003.30 = 87,661.40 : x
  2. Step 2: Convert to fraction form
    298,002.20/447,003.30 = 87,661.40/x
  3. Step 3: Cross multiply
    298,002.20x = 447,003.30 × 87,661.40
  4. Step 4: Simplify right side
    298,002.20x = 39,184,935,082.62
  5. Step 5: Solve for x
    x = 39,184,935,082.62/298,002.20
  6. Step 6: Final answer
    x = 131,492.10

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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.