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Finding the Fourth Proportional to 360,208.51, 540,312.75 and 135,619.33

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Solution

The fourth proportional to 360,208.51, 540,312.75 and 135,619.33 is: 203,428.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,208.51 : 540,312.75 = 135,619.33 : x
  2. Step 2: Convert to fraction form
    360,208.51/540,312.75 = 135,619.33/x
  3. Step 3: Cross multiply
    360,208.51x = 540,312.75 × 135,619.33
  4. Step 4: Simplify right side
    360,208.51x = 73,276,850,104.85
  5. Step 5: Solve for x
    x = 73,276,850,104.85/360,208.51
  6. Step 6: Final answer
    x = 203,428.98

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1.5x scale

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.