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Finding the Fourth Proportional to 245,434.68, 338,730.66 and 149,921.64

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Solution

The fourth proportional to 245,434.68, 338,730.66 and 149,921.64 is: 206,910.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,434.68 : 338,730.66 = 149,921.64 : x
  2. Step 2: Convert to fraction form
    245,434.68/338,730.66 = 149,921.64/x
  3. Step 3: Cross multiply
    245,434.68x = 338,730.66 × 149,921.64
  4. Step 4: Simplify right side
    245,434.68x = 50,783,056,065.48
  5. Step 5: Solve for x
    x = 50,783,056,065.48/245,434.68
  6. Step 6: Final answer
    x = 206,910.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.