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Finding the Fourth Proportional to 398,777.94, 550,294.14 and 237,629.40

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Solution

The fourth proportional to 398,777.94, 550,294.14 and 237,629.40 is: 327,917.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,777.94 : 550,294.14 = 237,629.40 : x
  2. Step 2: Convert to fraction form
    398,777.94/550,294.14 = 237,629.40/x
  3. Step 3: Cross multiply
    398,777.94x = 550,294.14 × 237,629.40
  4. Step 4: Simplify right side
    398,777.94x = 130,766,066,311.72
  5. Step 5: Solve for x
    x = 130,766,066,311.72/398,777.94
  6. Step 6: Final answer
    x = 327,917.00

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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.