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Finding the Fourth Proportional to 432,287.94, 647,103.17 and 368,515.02

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Solution

The fourth proportional to 432,287.94, 647,103.17 and 368,515.02 is: 551,639.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,287.94 : 647,103.17 = 368,515.02 : x
  2. Step 2: Convert to fraction form
    432,287.94/647,103.17 = 368,515.02/x
  3. Step 3: Cross multiply
    432,287.94x = 647,103.17 × 368,515.02
  4. Step 4: Simplify right side
    432,287.94x = 238,467,237,634.61
  5. Step 5: Solve for x
    x = 238,467,237,634.61/432,287.94
  6. Step 6: Final answer
    x = 551,639.81

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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.