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Finding the Fourth Proportional to 398,658.39, 550,211.67 and 237,606.86

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Solution

The fourth proportional to 398,658.39, 550,211.67 and 237,606.86 is: 327,935.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,658.39 : 550,211.67 = 237,606.86 : x
  2. Step 2: Convert to fraction form
    398,658.39/550,211.67 = 237,606.86/x
  3. Step 3: Cross multiply
    398,658.39x = 550,211.67 × 237,606.86
  4. Step 4: Simplify right side
    398,658.39x = 130,734,064,493.00
  5. Step 5: Solve for x
    x = 130,734,064,493.00/398,658.39
  6. Step 6: Final answer
    x = 327,935.06

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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.