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Finding the Fourth Proportional to 360,208.63, 540,312.94 and 135,619.45

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Solution

The fourth proportional to 360,208.63, 540,312.94 and 135,619.45 is: 203,429.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,208.63 : 540,312.94 = 135,619.45 : x
  2. Step 2: Convert to fraction form
    360,208.63/540,312.94 = 135,619.45/x
  3. Step 3: Cross multiply
    360,208.63x = 540,312.94 × 135,619.45
  4. Step 4: Simplify right side
    360,208.63x = 73,276,942,060.85
  5. Step 5: Solve for x
    x = 73,276,942,060.85/360,208.63
  6. Step 6: Final answer
    x = 203,429.17

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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.