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Finding the Fourth Proportional to 257,445.60, 385,390.80 and 226,341.60

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Solution

The fourth proportional to 257,445.60, 385,390.80 and 226,341.60 is: 338,828.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,445.60 : 385,390.80 = 226,341.60 : x
  2. Step 2: Convert to fraction form
    257,445.60/385,390.80 = 226,341.60/x
  3. Step 3: Cross multiply
    257,445.60x = 385,390.80 × 226,341.60
  4. Step 4: Simplify right side
    257,445.60x = 87,229,970,297.28
  5. Step 5: Solve for x
    x = 87,229,970,297.28/257,445.60
  6. Step 6: Final answer
    x = 338,828.75

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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.