Home / 426,921.52-640,385.03-170,775.49

Finding the Fourth Proportional to 426,921.52, 640,385.03 and 170,775.49

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Solution

The fourth proportional to 426,921.52, 640,385.03 and 170,775.49 is: 256,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,921.52 : 640,385.03 = 170,775.49 : x
  2. Step 2: Convert to fraction form
    426,921.52/640,385.03 = 170,775.49/x
  3. Step 3: Cross multiply
    426,921.52x = 640,385.03 × 170,775.49
  4. Step 4: Simplify right side
    426,921.52x = 109,362,067,286.92
  5. Step 5: Solve for x
    x = 109,362,067,286.92/426,921.52
  6. Step 6: Final answer
    x = 256,164.34

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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.