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Finding the Fourth Proportional to 360,208.88, 540,313.31 and 135,619.70

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Solution

The fourth proportional to 360,208.88, 540,313.31 and 135,619.70 is: 203,429.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,208.88 : 540,313.31 = 135,619.70 : x
  2. Step 2: Convert to fraction form
    360,208.88/540,313.31 = 135,619.70/x
  3. Step 3: Cross multiply
    360,208.88x = 540,313.31 × 135,619.70
  4. Step 4: Simplify right side
    360,208.88x = 73,277,129,008.21
  5. Step 5: Solve for x
    x = 73,277,129,008.21/360,208.88
  6. Step 6: Final answer
    x = 203,429.55

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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.