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Finding the Fourth Proportional to 395,374.87, 545,656.40 and 225,634.51

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Solution

The fourth proportional to 395,374.87, 545,656.40 and 225,634.51 is: 311,397.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,374.87 : 545,656.40 = 225,634.51 : x
  2. Step 2: Convert to fraction form
    395,374.87/545,656.40 = 225,634.51/x
  3. Step 3: Cross multiply
    395,374.87x = 545,656.40 × 225,634.51
  4. Step 4: Simplify right side
    395,374.87x = 123,118,914,442.36
  5. Step 5: Solve for x
    x = 123,118,914,442.36/395,374.87
  6. Step 6: Final answer
    x = 311,397.93

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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.