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Finding the Fourth Proportional to 414,931.60, 620,963.80 and 248,838.80

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Solution

The fourth proportional to 414,931.60, 620,963.80 and 248,838.80 is: 372,398.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,931.60 : 620,963.80 = 248,838.80 : x
  2. Step 2: Convert to fraction form
    414,931.60/620,963.80 = 248,838.80/x
  3. Step 3: Cross multiply
    414,931.60x = 620,963.80 × 248,838.80
  4. Step 4: Simplify right side
    414,931.60x = 154,519,886,835.44
  5. Step 5: Solve for x
    x = 154,519,886,835.44/414,931.60
  6. Step 6: Final answer
    x = 372,398.46

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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.