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Finding the Fourth Proportional to 448,990.88, 619,621.88 and 255,393.60

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Solution

The fourth proportional to 448,990.88, 619,621.88 and 255,393.60 is: 352,451.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,990.88 : 619,621.88 = 255,393.60 : x
  2. Step 2: Convert to fraction form
    448,990.88/619,621.88 = 255,393.60/x
  3. Step 3: Cross multiply
    448,990.88x = 619,621.88 × 255,393.60
  4. Step 4: Simplify right side
    448,990.88x = 158,247,462,571.97
  5. Step 5: Solve for x
    x = 158,247,462,571.97/448,990.88
  6. Step 6: Final answer
    x = 352,451.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.