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Finding the Fourth Proportional to 639,838.62, 959,019.71 and 240,224.51

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Solution

The fourth proportional to 639,838.62, 959,019.71 and 240,224.51 is: 360,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,838.62 : 959,019.71 = 240,224.51 : x
  2. Step 2: Convert to fraction form
    639,838.62/959,019.71 = 240,224.51/x
  3. Step 3: Cross multiply
    639,838.62x = 959,019.71 × 240,224.51
  4. Step 4: Simplify right side
    639,838.62x = 230,380,033,918.87
  5. Step 5: Solve for x
    x = 230,380,033,918.87/639,838.62
  6. Step 6: Final answer
    x = 360,059.59

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1.5x scale

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.