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Finding the Fourth Proportional to 352,157.32, 486,018.66 and 208,923.40

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Solution

The fourth proportional to 352,157.32, 486,018.66 and 208,923.40 is: 288,338.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,157.32 : 486,018.66 = 208,923.40 : x
  2. Step 2: Convert to fraction form
    352,157.32/486,018.66 = 208,923.40/x
  3. Step 3: Cross multiply
    352,157.32x = 486,018.66 × 208,923.40
  4. Step 4: Simplify right side
    352,157.32x = 101,540,670,910.64
  5. Step 5: Solve for x
    x = 101,540,670,910.64/352,157.32
  6. Step 6: Final answer
    x = 288,338.95

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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.