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Finding the Fourth Proportional to 640,079.69, 959,788.74 and 235,168.48

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Solution

The fourth proportional to 640,079.69, 959,788.74 and 235,168.48 is: 352,631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,079.69 : 959,788.74 = 235,168.48 : x
  2. Step 2: Convert to fraction form
    640,079.69/959,788.74 = 235,168.48/x
  3. Step 3: Cross multiply
    640,079.69x = 959,788.74 × 235,168.48
  4. Step 4: Simplify right side
    640,079.69x = 225,712,061,188.53
  5. Step 5: Solve for x
    x = 225,712,061,188.53/640,079.69
  6. Step 6: Final answer
    x = 352,631.19

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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.