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Finding the Fourth Proportional to 395,346.87, 545,617.76 and 225,606.51

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Solution

The fourth proportional to 395,346.87, 545,617.76 and 225,606.51 is: 311,359.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,346.87 : 545,617.76 = 225,606.51 : x
  2. Step 2: Convert to fraction form
    395,346.87/545,617.76 = 225,606.51/x
  3. Step 3: Cross multiply
    395,346.87x = 545,617.76 × 225,606.51
  4. Step 4: Simplify right side
    395,346.87x = 123,094,917,499.59
  5. Step 5: Solve for x
    x = 123,094,917,499.59/395,346.87
  6. Step 6: Final answer
    x = 311,359.28

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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.