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Finding the Fourth Proportional to 640,675.84, 961,023.08 and 167,361.25

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Solution

The fourth proportional to 640,675.84, 961,023.08 and 167,361.25 is: 251,044.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,675.84 : 961,023.08 = 167,361.25 : x
  2. Step 2: Convert to fraction form
    640,675.84/961,023.08 = 167,361.25/x
  3. Step 3: Cross multiply
    640,675.84x = 961,023.08 × 167,361.25
  4. Step 4: Simplify right side
    640,675.84x = 160,838,023,947.65
  5. Step 5: Solve for x
    x = 160,838,023,947.65/640,675.84
  6. Step 6: Final answer
    x = 251,044.31

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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.