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Finding the Fourth Proportional to 352,005, 485,568.18 and 208,624.20

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Solution

The fourth proportional to 352,005, 485,568.18 and 208,624.20 is: 287,783.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,005 : 485,568.18 = 208,624.20 : x
  2. Step 2: Convert to fraction form
    352,005/485,568.18 = 208,624.20/x
  3. Step 3: Cross multiply
    352,005x = 485,568.18 × 208,624.20
  4. Step 4: Simplify right side
    352,005x = 101,301,273,097.96
  5. Step 5: Solve for x
    x = 101,301,273,097.96/352,005
  6. Step 6: Final answer
    x = 287,783.62

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1.5x scale

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.