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Finding the Fourth Proportional to 352,308.97, 486,312.45 and 209,069

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Solution

The fourth proportional to 352,308.97, 486,312.45 and 209,069 is: 288,590.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,308.97 : 486,312.45 = 209,069 : x
  2. Step 2: Convert to fraction form
    352,308.97/486,312.45 = 209,069/x
  3. Step 3: Cross multiply
    352,308.97x = 486,312.45 × 209,069
  4. Step 4: Simplify right side
    352,308.97x = 101,672,857,609.05
  5. Step 5: Solve for x
    x = 101,672,857,609.05/352,308.97
  6. Step 6: Final answer
    x = 288,590.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.