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Finding the Fourth Proportional to 216,004.32, 323,719.74 and 114,781.05

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Solution

The fourth proportional to 216,004.32, 323,719.74 and 114,781.05 is: 172,019.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,004.32 : 323,719.74 = 114,781.05 : x
  2. Step 2: Convert to fraction form
    216,004.32/323,719.74 = 114,781.05/x
  3. Step 3: Cross multiply
    216,004.32x = 323,719.74 × 114,781.05
  4. Step 4: Simplify right side
    216,004.32x = 37,156,891,662.93
  5. Step 5: Solve for x
    x = 37,156,891,662.93/216,004.32
  6. Step 6: Final answer
    x = 172,019.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.