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Finding the Fourth Proportional to 398,965.96, 550,644.24 and 237,831.31

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Solution

The fourth proportional to 398,965.96, 550,644.24 and 237,831.31 is: 328,249.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,965.96 : 550,644.24 = 237,831.31 : x
  2. Step 2: Convert to fraction form
    398,965.96/550,644.24 = 237,831.31/x
  3. Step 3: Cross multiply
    398,965.96x = 550,644.24 × 237,831.31
  4. Step 4: Simplify right side
    398,965.96x = 130,960,440,943.15
  5. Step 5: Solve for x
    x = 130,960,440,943.15/398,965.96
  6. Step 6: Final answer
    x = 328,249.66

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1.5x scale

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.