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Finding the Fourth Proportional to 395,090.30, 545,249.30 and 223,037.42

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Solution

The fourth proportional to 395,090.30, 545,249.30 and 223,037.42 is: 307,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,090.30 : 545,249.30 = 223,037.42 : x
  2. Step 2: Convert to fraction form
    395,090.30/545,249.30 = 223,037.42/x
  3. Step 3: Cross multiply
    395,090.30x = 545,249.30 × 223,037.42
  4. Step 4: Simplify right side
    395,090.30x = 121,610,994,402.56
  5. Step 5: Solve for x
    x = 121,610,994,402.56/395,090.30
  6. Step 6: Final answer
    x = 307,805.57

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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.