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Finding the Fourth Proportional to 395,479.72, 545,809.97 and 223,404.94

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Solution

The fourth proportional to 395,479.72, 545,809.97 and 223,404.94 is: 308,325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,479.72 : 545,809.97 = 223,404.94 : x
  2. Step 2: Convert to fraction form
    395,479.72/545,809.97 = 223,404.94/x
  3. Step 3: Cross multiply
    395,479.72x = 545,809.97 × 223,404.94
  4. Step 4: Simplify right side
    395,479.72x = 121,936,643,599.25
  5. Step 5: Solve for x
    x = 121,936,643,599.25/395,479.72
  6. Step 6: Final answer
    x = 308,325.91

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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.