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Finding the Fourth Proportional to 415,929.60, 624,110.40 and 194,313.60

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Solution

The fourth proportional to 415,929.60, 624,110.40 and 194,313.60 is: 291,571.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,929.60 : 624,110.40 = 194,313.60 : x
  2. Step 2: Convert to fraction form
    415,929.60/624,110.40 = 194,313.60/x
  3. Step 3: Cross multiply
    415,929.60x = 624,110.40 × 194,313.60
  4. Step 4: Simplify right side
    415,929.60x = 121,273,138,621.44
  5. Step 5: Solve for x
    x = 121,273,138,621.44/415,929.60
  6. Step 6: Final answer
    x = 291,571.31

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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.