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Finding the Fourth Proportional to 203,434.92, 305,165.82 and 70,328.04

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Solution

The fourth proportional to 203,434.92, 305,165.82 and 70,328.04 is: 105,496.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,434.92 : 305,165.82 = 70,328.04 : x
  2. Step 2: Convert to fraction form
    203,434.92/305,165.82 = 70,328.04/x
  3. Step 3: Cross multiply
    203,434.92x = 305,165.82 × 70,328.04
  4. Step 4: Simplify right side
    203,434.92x = 21,461,713,995.59
  5. Step 5: Solve for x
    x = 21,461,713,995.59/203,434.92
  6. Step 6: Final answer
    x = 105,496.71

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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.