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Finding the Fourth Proportional to 395,400.52, 545,647.62 and 225,637.48

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Solution

The fourth proportional to 395,400.52, 545,647.62 and 225,637.48 is: 311,376.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,400.52 : 545,647.62 = 225,637.48 : x
  2. Step 2: Convert to fraction form
    395,400.52/545,647.62 = 225,637.48/x
  3. Step 3: Cross multiply
    395,400.52x = 545,647.62 × 225,637.48
  4. Step 4: Simplify right side
    395,400.52x = 123,118,553,944.80
  5. Step 5: Solve for x
    x = 123,118,553,944.80/395,400.52
  6. Step 6: Final answer
    x = 311,376.81

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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.