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Finding the Fourth Proportional to 415,998.40, 623,997.60 and 166,859.20

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Solution

The fourth proportional to 415,998.40, 623,997.60 and 166,859.20 is: 250,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,998.40 : 623,997.60 = 166,859.20 : x
  2. Step 2: Convert to fraction form
    415,998.40/623,997.60 = 166,859.20/x
  3. Step 3: Cross multiply
    415,998.40x = 623,997.60 × 166,859.20
  4. Step 4: Simplify right side
    415,998.40x = 104,119,740,337.92
  5. Step 5: Solve for x
    x = 104,119,740,337.92/415,998.40
  6. Step 6: Final answer
    x = 250,288.80

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Similar ratio
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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.