Home / 309,937.20-464,905.80-209,553.90

Finding the Fourth Proportional to 309,937.20, 464,905.80 and 209,553.90

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Solution

The fourth proportional to 309,937.20, 464,905.80 and 209,553.90 is: 314,330.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,937.20 : 464,905.80 = 209,553.90 : x
  2. Step 2: Convert to fraction form
    309,937.20/464,905.80 = 209,553.90/x
  3. Step 3: Cross multiply
    309,937.20x = 464,905.80 × 209,553.90
  4. Step 4: Simplify right side
    309,937.20x = 97,422,823,522.62
  5. Step 5: Solve for x
    x = 97,422,823,522.62/309,937.20
  6. Step 6: Final answer
    x = 314,330.85

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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.