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Finding the Fourth Proportional to 640,953.48, 961,356.78 and 167,684.52

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Solution

The fourth proportional to 640,953.48, 961,356.78 and 167,684.52 is: 251,507.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,953.48 : 961,356.78 = 167,684.52 : x
  2. Step 2: Convert to fraction form
    640,953.48/961,356.78 = 167,684.52/x
  3. Step 3: Cross multiply
    640,953.48x = 961,356.78 × 167,684.52
  4. Step 4: Simplify right side
    640,953.48x = 161,204,650,203.05
  5. Step 5: Solve for x
    x = 161,204,650,203.05/640,953.48
  6. Step 6: Final answer
    x = 251,507.57

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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.