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Finding the Fourth Proportional to 398,729.40, 550,200.06 and 237,561.72

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Solution

The fourth proportional to 398,729.40, 550,200.06 and 237,561.72 is: 327,807.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,729.40 : 550,200.06 = 237,561.72 : x
  2. Step 2: Convert to fraction form
    398,729.40/550,200.06 = 237,561.72/x
  3. Step 3: Cross multiply
    398,729.40x = 550,200.06 × 237,561.72
  4. Step 4: Simplify right side
    398,729.40x = 130,706,472,597.70
  5. Step 5: Solve for x
    x = 130,706,472,597.70/398,729.40
  6. Step 6: Final answer
    x = 327,807.46

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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.