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Finding the Fourth Proportional to 268,840.60, 403,260.90 and 81,827.80

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Solution

The fourth proportional to 268,840.60, 403,260.90 and 81,827.80 is: 122,741.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,840.60 : 403,260.90 = 81,827.80 : x
  2. Step 2: Convert to fraction form
    268,840.60/403,260.90 = 81,827.80/x
  3. Step 3: Cross multiply
    268,840.60x = 403,260.90 × 81,827.80
  4. Step 4: Simplify right side
    268,840.60x = 32,997,952,273.02
  5. Step 5: Solve for x
    x = 32,997,952,273.02/268,840.60
  6. Step 6: Final answer
    x = 122,741.70

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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.