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Finding the Fourth Proportional to 503,293.60, 754,940.40 and 279,344.80

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Solution

The fourth proportional to 503,293.60, 754,940.40 and 279,344.80 is: 419,017.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,293.60 : 754,940.40 = 279,344.80 : x
  2. Step 2: Convert to fraction form
    503,293.60/754,940.40 = 279,344.80/x
  3. Step 3: Cross multiply
    503,293.60x = 754,940.40 × 279,344.80
  4. Step 4: Simplify right side
    503,293.60x = 210,888,675,049.92
  5. Step 5: Solve for x
    x = 210,888,675,049.92/503,293.60
  6. Step 6: Final answer
    x = 419,017.20

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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.