Home / 388,795.78-536,538.20-219,029.91

Finding the Fourth Proportional to 388,795.78, 536,538.20 and 219,029.91

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Solution

The fourth proportional to 388,795.78, 536,538.20 and 219,029.91 is: 302,261.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,795.78 : 536,538.20 = 219,029.91 : x
  2. Step 2: Convert to fraction form
    388,795.78/536,538.20 = 219,029.91/x
  3. Step 3: Cross multiply
    388,795.78x = 536,538.20 × 219,029.91
  4. Step 4: Simplify right side
    388,795.78x = 117,517,910,550.39
  5. Step 5: Solve for x
    x = 117,517,910,550.39/388,795.78
  6. Step 6: Final answer
    x = 302,261.28

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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.