Home / 429,745.52-644,436.02-204,845.78

Finding the Fourth Proportional to 429,745.52, 644,436.02 and 204,845.78

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Solution

The fourth proportional to 429,745.52, 644,436.02 and 204,845.78 is: 307,181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,745.52 : 644,436.02 = 204,845.78 : x
  2. Step 2: Convert to fraction form
    429,745.52/644,436.02 = 204,845.78/x
  3. Step 3: Cross multiply
    429,745.52x = 644,436.02 × 204,845.78
  4. Step 4: Simplify right side
    429,745.52x = 132,009,999,177.00
  5. Step 5: Solve for x
    x = 132,009,999,177.00/429,745.52
  6. Step 6: Final answer
    x = 307,181.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.