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Finding the Fourth Proportional to 345,696.40, 518,544.60 and 324,701.20

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Solution

The fourth proportional to 345,696.40, 518,544.60 and 324,701.20 is: 487,051.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,696.40 : 518,544.60 = 324,701.20 : x
  2. Step 2: Convert to fraction form
    345,696.40/518,544.60 = 324,701.20/x
  3. Step 3: Cross multiply
    345,696.40x = 518,544.60 × 324,701.20
  4. Step 4: Simplify right side
    345,696.40x = 168,372,053,873.52
  5. Step 5: Solve for x
    x = 168,372,053,873.52/345,696.40
  6. Step 6: Final answer
    x = 487,051.80

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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.