Home / 383,428.20-575,142.30-215,466.60

Finding the Fourth Proportional to 383,428.20, 575,142.30 and 215,466.60

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Solution

The fourth proportional to 383,428.20, 575,142.30 and 215,466.60 is: 323,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,428.20 : 575,142.30 = 215,466.60 : x
  2. Step 2: Convert to fraction form
    383,428.20/575,142.30 = 215,466.60/x
  3. Step 3: Cross multiply
    383,428.20x = 575,142.30 × 215,466.60
  4. Step 4: Simplify right side
    383,428.20x = 123,923,955,897.18
  5. Step 5: Solve for x
    x = 123,923,955,897.18/383,428.20
  6. Step 6: Final answer
    x = 323,199.90

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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.