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Finding the Fourth Proportional to 236,614.40, 355,180.80 and 131,638.40

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Solution

The fourth proportional to 236,614.40, 355,180.80 and 131,638.40 is: 197,601.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,614.40 : 355,180.80 = 131,638.40 : x
  2. Step 2: Convert to fraction form
    236,614.40/355,180.80 = 131,638.40/x
  3. Step 3: Cross multiply
    236,614.40x = 355,180.80 × 131,638.40
  4. Step 4: Simplify right side
    236,614.40x = 46,755,432,222.72
  5. Step 5: Solve for x
    x = 46,755,432,222.72/236,614.40
  6. Step 6: Final answer
    x = 197,601.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.