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Finding the Fourth Proportional to 220,448.48, 330,722.72 and 70,699.20

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Solution

The fourth proportional to 220,448.48, 330,722.72 and 70,699.20 is: 106,064.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,448.48 : 330,722.72 = 70,699.20 : x
  2. Step 2: Convert to fraction form
    220,448.48/330,722.72 = 70,699.20/x
  3. Step 3: Cross multiply
    220,448.48x = 330,722.72 × 70,699.20
  4. Step 4: Simplify right side
    220,448.48x = 23,381,831,725.82
  5. Step 5: Solve for x
    x = 23,381,831,725.82/220,448.48
  6. Step 6: Final answer
    x = 106,064.84

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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.