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Finding the Fourth Proportional to 208,444.68, 312,725.34 and 68,301.72

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Solution

The fourth proportional to 208,444.68, 312,725.34 and 68,301.72 is: 102,471.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,444.68 : 312,725.34 = 68,301.72 : x
  2. Step 2: Convert to fraction form
    208,444.68/312,725.34 = 68,301.72/x
  3. Step 3: Cross multiply
    208,444.68x = 312,725.34 × 68,301.72
  4. Step 4: Simplify right side
    208,444.68x = 21,359,678,609.58
  5. Step 5: Solve for x
    x = 21,359,678,609.58/208,444.68
  6. Step 6: Final answer
    x = 102,471.69

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1.5x scale

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.