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Finding the Fourth Proportional to 640,735.40, 961,030.20 and 167,468.60

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Solution

The fourth proportional to 640,735.40, 961,030.20 and 167,468.60 is: 251,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,735.40 : 961,030.20 = 167,468.60 : x
  2. Step 2: Convert to fraction form
    640,735.40/961,030.20 = 167,468.60/x
  3. Step 3: Cross multiply
    640,735.40x = 961,030.20 × 167,468.60
  4. Step 4: Simplify right side
    640,735.40x = 160,942,382,151.72
  5. Step 5: Solve for x
    x = 160,942,382,151.72/640,735.40
  6. Step 6: Final answer
    x = 251,183.85

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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.