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Finding the Fourth Proportional to 215,577.51, 323,405.42 and 73,415.49

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Solution

The fourth proportional to 215,577.51, 323,405.42 and 73,415.49 is: 110,136.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,577.51 : 323,405.42 = 73,415.49 : x
  2. Step 2: Convert to fraction form
    215,577.51/323,405.42 = 73,415.49/x
  3. Step 3: Cross multiply
    215,577.51x = 323,405.42 × 73,415.49
  4. Step 4: Simplify right side
    215,577.51x = 23,742,967,010.88
  5. Step 5: Solve for x
    x = 23,742,967,010.88/215,577.51
  6. Step 6: Final answer
    x = 110,136.57

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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.