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Finding the Fourth Proportional to 261,633.60, 392,612.40 and 103,845.60

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Solution

The fourth proportional to 261,633.60, 392,612.40 and 103,845.60 is: 155,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,633.60 : 392,612.40 = 103,845.60 : x
  2. Step 2: Convert to fraction form
    261,633.60/392,612.40 = 103,845.60/x
  3. Step 3: Cross multiply
    261,633.60x = 392,612.40 × 103,845.60
  4. Step 4: Simplify right side
    261,633.60x = 40,771,070,245.44
  5. Step 5: Solve for x
    x = 40,771,070,245.44/261,633.60
  6. Step 6: Final answer
    x = 155,832.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.