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Finding the Fourth Proportional to 398,960.96, 550,637.34 and 237,826.28

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Solution

The fourth proportional to 398,960.96, 550,637.34 and 237,826.28 is: 328,242.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,960.96 : 550,637.34 = 237,826.28 : x
  2. Step 2: Convert to fraction form
    398,960.96/550,637.34 = 237,826.28/x
  3. Step 3: Cross multiply
    398,960.96x = 550,637.34 × 237,826.28
  4. Step 4: Simplify right side
    398,960.96x = 130,956,030,201.30
  5. Step 5: Solve for x
    x = 130,956,030,201.30/398,960.96
  6. Step 6: Final answer
    x = 328,242.72

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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.