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Finding the Fourth Proportional to 395,309.92, 545,610.08 and 363,428.32

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Solution

The fourth proportional to 395,309.92, 545,610.08 and 363,428.32 is: 501,606.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,309.92 : 545,610.08 = 363,428.32 : x
  2. Step 2: Convert to fraction form
    395,309.92/545,610.08 = 363,428.32/x
  3. Step 3: Cross multiply
    395,309.92x = 545,610.08 × 363,428.32
  4. Step 4: Simplify right side
    395,309.92x = 198,290,154,749.47
  5. Step 5: Solve for x
    x = 198,290,154,749.47/395,309.92
  6. Step 6: Final answer
    x = 501,606.83

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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.