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Finding the Fourth Proportional to 383,691.42, 575,589.65 and 130,904.04

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Solution

The fourth proportional to 383,691.42, 575,589.65 and 130,904.04 is: 196,373.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,691.42 : 575,589.65 = 130,904.04 : x
  2. Step 2: Convert to fraction form
    383,691.42/575,589.65 = 130,904.04/x
  3. Step 3: Cross multiply
    383,691.42x = 575,589.65 × 130,904.04
  4. Step 4: Simplify right side
    383,691.42x = 75,347,009,912.67
  5. Step 5: Solve for x
    x = 75,347,009,912.67/383,691.42
  6. Step 6: Final answer
    x = 196,373.98

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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.