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Finding the Fourth Proportional to 395,527.91, 545,926.16 and 225,860.45

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Solution

The fourth proportional to 395,527.91, 545,926.16 and 225,860.45 is: 311,743.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,527.91 : 545,926.16 = 225,860.45 : x
  2. Step 2: Convert to fraction form
    395,527.91/545,926.16 = 225,860.45/x
  3. Step 3: Cross multiply
    395,527.91x = 545,926.16 × 225,860.45
  4. Step 4: Simplify right side
    395,527.91x = 123,303,125,999.39
  5. Step 5: Solve for x
    x = 123,303,125,999.39/395,527.91
  6. Step 6: Final answer
    x = 311,743.18

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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.