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Finding the Fourth Proportional to 211,025.28, 316,541.32 and 68,870.04

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Solution

The fourth proportional to 211,025.28, 316,541.32 and 68,870.04 is: 103,306.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,025.28 : 316,541.32 = 68,870.04 : x
  2. Step 2: Convert to fraction form
    211,025.28/316,541.32 = 68,870.04/x
  3. Step 3: Cross multiply
    211,025.28x = 316,541.32 × 68,870.04
  4. Step 4: Simplify right side
    211,025.28x = 21,800,213,370.05
  5. Step 5: Solve for x
    x = 21,800,213,370.05/211,025.28
  6. Step 6: Final answer
    x = 103,306.17

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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.