Home / 415,910.56-623,921.44-145,974.64

Finding the Fourth Proportional to 415,910.56, 623,921.44 and 145,974.64

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Solution

The fourth proportional to 415,910.56, 623,921.44 and 145,974.64 is: 218,981.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,910.56 : 623,921.44 = 145,974.64 : x
  2. Step 2: Convert to fraction form
    415,910.56/623,921.44 = 145,974.64/x
  3. Step 3: Cross multiply
    415,910.56x = 623,921.44 × 145,974.64
  4. Step 4: Simplify right side
    415,910.56x = 91,076,707,592.28
  5. Step 5: Solve for x
    x = 91,076,707,592.28/415,910.56
  6. Step 6: Final answer
    x = 218,981.47

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1.5x scale

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.