Home / 415,939.60-623,909.40-135,485.20

Finding the Fourth Proportional to 415,939.60, 623,909.40 and 135,485.20

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Solution

The fourth proportional to 415,939.60, 623,909.40 and 135,485.20 is: 203,227.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,939.60 : 623,909.40 = 135,485.20 : x
  2. Step 2: Convert to fraction form
    415,939.60/623,909.40 = 135,485.20/x
  3. Step 3: Cross multiply
    415,939.60x = 623,909.40 × 135,485.20
  4. Step 4: Simplify right side
    415,939.60x = 84,530,489,840.88
  5. Step 5: Solve for x
    x = 84,530,489,840.88/415,939.60
  6. Step 6: Final answer
    x = 203,227.80

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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.