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Finding the Fourth Proportional to 345,445.84, 518,168.77 and 134,936.16

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Solution

The fourth proportional to 345,445.84, 518,168.77 and 134,936.16 is: 202,404.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,445.84 : 518,168.77 = 134,936.16 : x
  2. Step 2: Convert to fraction form
    345,445.84/518,168.77 = 134,936.16/x
  3. Step 3: Cross multiply
    345,445.84x = 518,168.77 × 134,936.16
  4. Step 4: Simplify right side
    345,445.84x = 69,919,701,775.25
  5. Step 5: Solve for x
    x = 69,919,701,775.25/345,445.84
  6. Step 6: Final answer
    x = 202,404.24

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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.