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Finding the Fourth Proportional to 383,836.80, 576,446.40 and 371,395.20

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Solution

The fourth proportional to 383,836.80, 576,446.40 and 371,395.20 is: 557,761.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,836.80 : 576,446.40 = 371,395.20 : x
  2. Step 2: Convert to fraction form
    383,836.80/576,446.40 = 371,395.20/x
  3. Step 3: Cross multiply
    383,836.80x = 576,446.40 × 371,395.20
  4. Step 4: Simplify right side
    383,836.80x = 214,089,426,017.28
  5. Step 5: Solve for x
    x = 214,089,426,017.28/383,836.80
  6. Step 6: Final answer
    x = 557,761.60

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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.