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Finding the Fourth Proportional to 234,423.40, 351,404.70 and 209,540.20

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Solution

The fourth proportional to 234,423.40, 351,404.70 and 209,540.20 is: 314,104.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,423.40 : 351,404.70 = 209,540.20 : x
  2. Step 2: Convert to fraction form
    234,423.40/351,404.70 = 209,540.20/x
  3. Step 3: Cross multiply
    234,423.40x = 351,404.70 × 209,540.20
  4. Step 4: Simplify right side
    234,423.40x = 73,633,411,118.94
  5. Step 5: Solve for x
    x = 73,633,411,118.94/234,423.40
  6. Step 6: Final answer
    x = 314,104.36

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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.