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Finding the Fourth Proportional to 331,440.40, 497,225.40 and 131,726.80

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Solution

The fourth proportional to 331,440.40, 497,225.40 and 131,726.80 is: 197,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,440.40 : 497,225.40 = 131,726.80 : x
  2. Step 2: Convert to fraction form
    331,440.40/497,225.40 = 131,726.80/x
  3. Step 3: Cross multiply
    331,440.40x = 497,225.40 × 131,726.80
  4. Step 4: Simplify right side
    331,440.40x = 65,497,910,820.72
  5. Step 5: Solve for x
    x = 65,497,910,820.72/331,440.40
  6. Step 6: Final answer
    x = 197,615.95

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1.5x scale

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.