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Finding the Fourth Proportional to 395,573.76, 545,780.99 and 248,414.47

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Solution

The fourth proportional to 395,573.76, 545,780.99 and 248,414.47 is: 342,742.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,573.76 : 545,780.99 = 248,414.47 : x
  2. Step 2: Convert to fraction form
    395,573.76/545,780.99 = 248,414.47/x
  3. Step 3: Cross multiply
    395,573.76x = 545,780.99 × 248,414.47
  4. Step 4: Simplify right side
    395,573.76x = 135,579,894,623.51
  5. Step 5: Solve for x
    x = 135,579,894,623.51/395,573.76
  6. Step 6: Final answer
    x = 342,742.39

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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.