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Finding the Fourth Proportional to 220,015, 303,621.51 and 119,413

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Solution

The fourth proportional to 220,015, 303,621.51 and 119,413 is: 164,790.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,015 : 303,621.51 = 119,413 : x
  2. Step 2: Convert to fraction form
    220,015/303,621.51 = 119,413/x
  3. Step 3: Cross multiply
    220,015x = 303,621.51 × 119,413
  4. Step 4: Simplify right side
    220,015x = 36,256,355,373.63
  5. Step 5: Solve for x
    x = 36,256,355,373.63/220,015
  6. Step 6: Final answer
    x = 164,790.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.