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Finding the Fourth Proportional to 345,636.53, 518,342.72 and 132,393.10

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Solution

The fourth proportional to 345,636.53, 518,342.72 and 132,393.10 is: 198,546.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,636.53 : 518,342.72 = 132,393.10 : x
  2. Step 2: Convert to fraction form
    345,636.53/518,342.72 = 132,393.10/x
  3. Step 3: Cross multiply
    345,636.53x = 518,342.72 × 132,393.10
  4. Step 4: Simplify right side
    345,636.53x = 68,624,998,598.36
  5. Step 5: Solve for x
    x = 68,624,998,598.36/345,636.53
  6. Step 6: Final answer
    x = 198,546.72

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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.