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Finding the Fourth Proportional to 211,025.29, 316,541.31 and 68,870.02

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Solution

The fourth proportional to 211,025.29, 316,541.31 and 68,870.02 is: 103,306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,025.29 : 316,541.31 = 68,870.02 : x
  2. Step 2: Convert to fraction form
    211,025.29/316,541.31 = 68,870.02/x
  3. Step 3: Cross multiply
    211,025.29x = 316,541.31 × 68,870.02
  4. Step 4: Simplify right side
    211,025.29x = 21,800,206,350.53
  5. Step 5: Solve for x
    x = 21,800,206,350.53/211,025.29
  6. Step 6: Final answer
    x = 103,306.13

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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.