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Finding the Fourth Proportional to 624,355.20, 936,302.40 and 203,644.80

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Solution

The fourth proportional to 624,355.20, 936,302.40 and 203,644.80 is: 305,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,355.20 : 936,302.40 = 203,644.80 : x
  2. Step 2: Convert to fraction form
    624,355.20/936,302.40 = 203,644.80/x
  3. Step 3: Cross multiply
    624,355.20x = 936,302.40 × 203,644.80
  4. Step 4: Simplify right side
    624,355.20x = 190,673,114,987.52
  5. Step 5: Solve for x
    x = 190,673,114,987.52/624,355.20
  6. Step 6: Final answer
    x = 305,392.05

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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.