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Finding the Fourth Proportional to 279,758.72, 419,931.60 and 247,941.46

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Solution

The fourth proportional to 279,758.72, 419,931.60 and 247,941.46 is: 372,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,758.72 : 419,931.60 = 247,941.46 : x
  2. Step 2: Convert to fraction form
    279,758.72/419,931.60 = 247,941.46/x
  3. Step 3: Cross multiply
    279,758.72x = 419,931.60 × 247,941.46
  4. Step 4: Simplify right side
    279,758.72x = 104,118,454,004.14
  5. Step 5: Solve for x
    x = 104,118,454,004.14/279,758.72
  6. Step 6: Final answer
    x = 372,172.33

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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.