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Finding the Fourth Proportional to 383,821.80, 575,732.70 and 134,471.40

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Solution

The fourth proportional to 383,821.80, 575,732.70 and 134,471.40 is: 201,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,821.80 : 575,732.70 = 134,471.40 : x
  2. Step 2: Convert to fraction form
    383,821.80/575,732.70 = 134,471.40/x
  3. Step 3: Cross multiply
    383,821.80x = 575,732.70 × 134,471.40
  4. Step 4: Simplify right side
    383,821.80x = 77,419,582,194.78
  5. Step 5: Solve for x
    x = 77,419,582,194.78/383,821.80
  6. Step 6: Final answer
    x = 201,707.10

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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.