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Finding the Fourth Proportional to 398,800.21, 550,330.85 and 237,571.75

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Solution

The fourth proportional to 398,800.21, 550,330.85 and 237,571.75 is: 327,841.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,800.21 : 550,330.85 = 237,571.75 : x
  2. Step 2: Convert to fraction form
    398,800.21/550,330.85 = 237,571.75/x
  3. Step 3: Cross multiply
    398,800.21x = 550,330.85 × 237,571.75
  4. Step 4: Simplify right side
    398,800.21x = 130,743,060,955.76
  5. Step 5: Solve for x
    x = 130,743,060,955.76/398,800.21
  6. Step 6: Final answer
    x = 327,841.01

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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.