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Finding the Fourth Proportional to 388,893.26, 536,677.46 and 225,587.58

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Solution

The fourth proportional to 388,893.26, 536,677.46 and 225,587.58 is: 311,313.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,893.26 : 536,677.46 = 225,587.58 : x
  2. Step 2: Convert to fraction form
    388,893.26/536,677.46 = 225,587.58/x
  3. Step 3: Cross multiply
    388,893.26x = 536,677.46 × 225,587.58
  4. Step 4: Simplify right side
    388,893.26x = 121,067,768,314.01
  5. Step 5: Solve for x
    x = 121,067,768,314.01/388,893.26
  6. Step 6: Final answer
    x = 311,313.62

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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.