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Finding the Fourth Proportional to 398,653.22, 550,188.16 and 226,597.02

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Solution

The fourth proportional to 398,653.22, 550,188.16 and 226,597.02 is: 312,730.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,653.22 : 550,188.16 = 226,597.02 : x
  2. Step 2: Convert to fraction form
    398,653.22/550,188.16 = 226,597.02/x
  3. Step 3: Cross multiply
    398,653.22x = 550,188.16 × 226,597.02
  4. Step 4: Simplify right side
    398,653.22x = 124,670,994,865.59
  5. Step 5: Solve for x
    x = 124,670,994,865.59/398,653.22
  6. Step 6: Final answer
    x = 312,730.44

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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.