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Finding the Fourth Proportional to 363,980.05, 502,285.66 and 202,831.56

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Solution

The fourth proportional to 363,980.05, 502,285.66 and 202,831.56 is: 279,903.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,980.05 : 502,285.66 = 202,831.56 : x
  2. Step 2: Convert to fraction form
    363,980.05/502,285.66 = 202,831.56/x
  3. Step 3: Cross multiply
    363,980.05x = 502,285.66 × 202,831.56
  4. Step 4: Simplify right side
    363,980.05x = 101,879,383,476.35
  5. Step 5: Solve for x
    x = 101,879,383,476.35/363,980.05
  6. Step 6: Final answer
    x = 279,903.76

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1.5x scale

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.