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Finding the Fourth Proportional to 415,460.88, 623,471.37 and 145,591.44

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Solution

The fourth proportional to 415,460.88, 623,471.37 and 145,591.44 is: 218,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,460.88 : 623,471.37 = 145,591.44 : x
  2. Step 2: Convert to fraction form
    415,460.88/623,471.37 = 145,591.44/x
  3. Step 3: Cross multiply
    415,460.88x = 623,471.37 × 145,591.44
  4. Step 4: Simplify right side
    415,460.88x = 90,772,094,557.07
  5. Step 5: Solve for x
    x = 90,772,094,557.07/415,460.88
  6. Step 6: Final answer
    x = 218,485.30

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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.