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Finding the Fourth Proportional to 352,854.08, 487,015.62 and 217,004.90

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Solution

The fourth proportional to 352,854.08, 487,015.62 and 217,004.90 is: 299,514.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,854.08 : 487,015.62 = 217,004.90 : x
  2. Step 2: Convert to fraction form
    352,854.08/487,015.62 = 217,004.90/x
  3. Step 3: Cross multiply
    352,854.08x = 487,015.62 × 217,004.90
  4. Step 4: Simplify right side
    352,854.08x = 105,684,775,916.54
  5. Step 5: Solve for x
    x = 105,684,775,916.54/352,854.08
  6. Step 6: Final answer
    x = 299,514.11

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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.