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Finding the Fourth Proportional to 257,499.60, 385,374.60 and 226,006.80

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Solution

The fourth proportional to 257,499.60, 385,374.60 and 226,006.80 is: 338,242.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,499.60 : 385,374.60 = 226,006.80 : x
  2. Step 2: Convert to fraction form
    257,499.60/385,374.60 = 226,006.80/x
  3. Step 3: Cross multiply
    257,499.60x = 385,374.60 × 226,006.80
  4. Step 4: Simplify right side
    257,499.60x = 87,097,280,147.28
  5. Step 5: Solve for x
    x = 87,097,280,147.28/257,499.60
  6. Step 6: Final answer
    x = 338,242.39

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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.