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Finding the Fourth Proportional to 383,804.28, 575,304.24 and 215,077.23

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Solution

The fourth proportional to 383,804.28, 575,304.24 and 215,077.23 is: 322,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,804.28 : 575,304.24 = 215,077.23 : x
  2. Step 2: Convert to fraction form
    383,804.28/575,304.24 = 215,077.23/x
  3. Step 3: Cross multiply
    383,804.28x = 575,304.24 × 215,077.23
  4. Step 4: Simplify right side
    383,804.28x = 123,734,842,346.46
  5. Step 5: Solve for x
    x = 123,734,842,346.46/383,804.28
  6. Step 6: Final answer
    x = 322,390.47

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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.