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Finding the Fourth Proportional to 398,859.20, 550,326.04 and 243,770.84

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Solution

The fourth proportional to 398,859.20, 550,326.04 and 243,770.84 is: 336,342.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,859.20 : 550,326.04 = 243,770.84 : x
  2. Step 2: Convert to fraction form
    398,859.20/550,326.04 = 243,770.84/x
  3. Step 3: Cross multiply
    398,859.20x = 550,326.04 × 243,770.84
  4. Step 4: Simplify right side
    398,859.20x = 134,153,441,044.67
  5. Step 5: Solve for x
    x = 134,153,441,044.67/398,859.20
  6. Step 6: Final answer
    x = 336,342.85

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