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Finding the Fourth Proportional to 397,377.84, 548,584.52 and 306,529.86

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Solution

The fourth proportional to 397,377.84, 548,584.52 and 306,529.86 is: 423,167.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,377.84 : 548,584.52 = 306,529.86 : x
  2. Step 2: Convert to fraction form
    397,377.84/548,584.52 = 306,529.86/x
  3. Step 3: Cross multiply
    397,377.84x = 548,584.52 × 306,529.86
  4. Step 4: Simplify right side
    397,377.84x = 168,157,534,581.12
  5. Step 5: Solve for x
    x = 168,157,534,581.12/397,377.84
  6. Step 6: Final answer
    x = 423,167.87

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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.