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Finding the Fourth Proportional to 624,781.70, 936,978.45 and 225,370.58

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Solution

The fourth proportional to 624,781.70, 936,978.45 and 225,370.58 is: 337,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,781.70 : 936,978.45 = 225,370.58 : x
  2. Step 2: Convert to fraction form
    624,781.70/936,978.45 = 225,370.58/x
  3. Step 3: Cross multiply
    624,781.70x = 936,978.45 × 225,370.58
  4. Step 4: Simplify right side
    624,781.70x = 211,167,376,724.00
  5. Step 5: Solve for x
    x = 211,167,376,724.00/624,781.70
  6. Step 6: Final answer
    x = 337,985.85

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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.