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Finding the Fourth Proportional to 383,955.97, 575,931.52 and 131,114.47

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Solution

The fourth proportional to 383,955.97, 575,931.52 and 131,114.47 is: 196,670.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,955.97 : 575,931.52 = 131,114.47 : x
  2. Step 2: Convert to fraction form
    383,955.97/575,931.52 = 131,114.47/x
  3. Step 3: Cross multiply
    383,955.97x = 575,931.52 × 131,114.47
  4. Step 4: Simplify right side
    383,955.97x = 75,512,952,465.86
  5. Step 5: Solve for x
    x = 75,512,952,465.86/383,955.97
  6. Step 6: Final answer
    x = 196,670.87

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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.