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Finding the Fourth Proportional to 352,482.88, 486,434.60 and 209,243.47

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Solution

The fourth proportional to 352,482.88, 486,434.60 and 209,243.47 is: 288,760.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,482.88 : 486,434.60 = 209,243.47 : x
  2. Step 2: Convert to fraction form
    352,482.88/486,434.60 = 209,243.47/x
  3. Step 3: Cross multiply
    352,482.88x = 486,434.60 × 209,243.47
  4. Step 4: Simplify right side
    352,482.88x = 101,783,262,585.85
  5. Step 5: Solve for x
    x = 101,783,262,585.85/352,482.88
  6. Step 6: Final answer
    x = 288,760.87

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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.