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Finding the Fourth Proportional to 398,648.79, 550,268.64 and 237,554.37

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Solution

The fourth proportional to 398,648.79, 550,268.64 and 237,554.37 is: 327,904.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,648.79 : 550,268.64 = 237,554.37 : x
  2. Step 2: Convert to fraction form
    398,648.79/550,268.64 = 237,554.37/x
  3. Step 3: Cross multiply
    398,648.79x = 550,268.64 × 237,554.37
  4. Step 4: Simplify right side
    398,648.79x = 130,718,720,105.96
  5. Step 5: Solve for x
    x = 130,718,720,105.96/398,648.79
  6. Step 6: Final answer
    x = 327,904.47

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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.