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Finding the Fourth Proportional to 220,507.45, 330,838.93 and 80,280.25

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Solution

The fourth proportional to 220,507.45, 330,838.93 and 80,280.25 is: 120,448.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,507.45 : 330,838.93 = 80,280.25 : x
  2. Step 2: Convert to fraction form
    220,507.45/330,838.93 = 80,280.25/x
  3. Step 3: Cross multiply
    220,507.45x = 330,838.93 × 80,280.25
  4. Step 4: Simplify right side
    220,507.45x = 26,559,831,283.39
  5. Step 5: Solve for x
    x = 26,559,831,283.39/220,507.45
  6. Step 6: Final answer
    x = 120,448.68

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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.