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Finding the Fourth Proportional to 383,869.50, 575,783.48 and 117,630.79

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Solution

The fourth proportional to 383,869.50, 575,783.48 and 117,630.79 is: 176,439.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,869.50 : 575,783.48 = 117,630.79 : x
  2. Step 2: Convert to fraction form
    383,869.50/575,783.48 = 117,630.79/x
  3. Step 3: Cross multiply
    383,869.50x = 575,783.48 × 117,630.79
  4. Step 4: Simplify right side
    383,869.50x = 67,729,862,742.43
  5. Step 5: Solve for x
    x = 67,729,862,742.43/383,869.50
  6. Step 6: Final answer
    x = 176,439.81

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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.