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Finding the Fourth Proportional to 305,781.20, 458,671.80 and 164,063.60

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Solution

The fourth proportional to 305,781.20, 458,671.80 and 164,063.60 is: 246,095.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,781.20 : 458,671.80 = 164,063.60 : x
  2. Step 2: Convert to fraction form
    305,781.20/458,671.80 = 164,063.60/x
  3. Step 3: Cross multiply
    305,781.20x = 458,671.80 × 164,063.60
  4. Step 4: Simplify right side
    305,781.20x = 75,251,346,726.48
  5. Step 5: Solve for x
    x = 75,251,346,726.48/305,781.20
  6. Step 6: Final answer
    x = 246,095.40

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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.