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Finding the Fourth Proportional to 624,782.70, 936,979.95 and 225,371.58

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Solution

The fourth proportional to 624,782.70, 936,979.95 and 225,371.58 is: 337,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,782.70 : 936,979.95 = 225,371.58 : x
  2. Step 2: Convert to fraction form
    624,782.70/936,979.95 = 225,371.58/x
  3. Step 3: Cross multiply
    624,782.70x = 936,979.95 × 225,371.58
  4. Step 4: Simplify right side
    624,782.70x = 211,168,651,759.82
  5. Step 5: Solve for x
    x = 211,168,651,759.82/624,782.70
  6. Step 6: Final answer
    x = 337,987.35

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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.