Home / 640,739.40-961,036.20-167,472.60

Finding the Fourth Proportional to 640,739.40, 961,036.20 and 167,472.60

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Solution

The fourth proportional to 640,739.40, 961,036.20 and 167,472.60 is: 251,189.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,739.40 : 961,036.20 = 167,472.60 : x
  2. Step 2: Convert to fraction form
    640,739.40/961,036.20 = 167,472.60/x
  3. Step 3: Cross multiply
    640,739.40x = 961,036.20 × 167,472.60
  4. Step 4: Simplify right side
    640,739.40x = 160,947,231,108.12
  5. Step 5: Solve for x
    x = 160,947,231,108.12/640,739.40
  6. Step 6: Final answer
    x = 251,189.85

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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.