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Finding the Fourth Proportional to 345,627, 518,644.62 and 145,934.46

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Solution

The fourth proportional to 345,627, 518,644.62 and 145,934.46 is: 218,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,627 : 518,644.62 = 145,934.46 : x
  2. Step 2: Convert to fraction form
    345,627/518,644.62 = 145,934.46/x
  3. Step 3: Cross multiply
    345,627x = 518,644.62 × 145,934.46
  4. Step 4: Simplify right side
    345,627x = 75,688,122,551.61
  5. Step 5: Solve for x
    x = 75,688,122,551.61/345,627
  6. Step 6: Final answer
    x = 218,987.88

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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.