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Finding the Fourth Proportional to 640,158.63, 960,380.82 and 240,802.71

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Solution

The fourth proportional to 640,158.63, 960,380.82 and 240,802.71 is: 361,257.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,158.63 : 960,380.82 = 240,802.71 : x
  2. Step 2: Convert to fraction form
    640,158.63/960,380.82 = 240,802.71/x
  3. Step 3: Cross multiply
    640,158.63x = 960,380.82 × 240,802.71
  4. Step 4: Simplify right side
    640,158.63x = 231,262,304,088.02
  5. Step 5: Solve for x
    x = 231,262,304,088.02/640,158.63
  6. Step 6: Final answer
    x = 361,257.81

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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.