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Finding the Fourth Proportional to 395,166.60, 545,324.40 and 225,403.56

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Solution

The fourth proportional to 395,166.60, 545,324.40 and 225,403.56 is: 311,053.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,166.60 : 545,324.40 = 225,403.56 : x
  2. Step 2: Convert to fraction form
    395,166.60/545,324.40 = 225,403.56/x
  3. Step 3: Cross multiply
    395,166.60x = 545,324.40 × 225,403.56
  4. Step 4: Simplify right side
    395,166.60x = 122,918,061,114.86
  5. Step 5: Solve for x
    x = 122,918,061,114.86/395,166.60
  6. Step 6: Final answer
    x = 311,053.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.