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Finding the Fourth Proportional to 269,989.91, 404,979.39 and 70,305.87

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Solution

The fourth proportional to 269,989.91, 404,979.39 and 70,305.87 is: 105,457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,989.91 : 404,979.39 = 70,305.87 : x
  2. Step 2: Convert to fraction form
    269,989.91/404,979.39 = 70,305.87/x
  3. Step 3: Cross multiply
    269,989.91x = 404,979.39 × 70,305.87
  4. Step 4: Simplify right side
    269,989.91x = 28,472,428,346.02
  5. Step 5: Solve for x
    x = 28,472,428,346.02/269,989.91
  6. Step 6: Final answer
    x = 105,457.38

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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.