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Finding the Fourth Proportional to 280,356.48, 419,990.04 and 248,941.44

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Solution

The fourth proportional to 280,356.48, 419,990.04 and 248,941.44 is: 372,928.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,356.48 : 419,990.04 = 248,941.44 : x
  2. Step 2: Convert to fraction form
    280,356.48/419,990.04 = 248,941.44/x
  3. Step 3: Cross multiply
    280,356.48x = 419,990.04 × 248,941.44
  4. Step 4: Simplify right side
    280,356.48x = 104,552,925,343.26
  5. Step 5: Solve for x
    x = 104,552,925,343.26/280,356.48
  6. Step 6: Final answer
    x = 372,928.51

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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.