Home / 220,143.81-303,830.55-123,354.21

Finding the Fourth Proportional to 220,143.81, 303,830.55 and 123,354.21

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Solution

The fourth proportional to 220,143.81, 303,830.55 and 123,354.21 is: 170,246.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,143.81 : 303,830.55 = 123,354.21 : x
  2. Step 2: Convert to fraction form
    220,143.81/303,830.55 = 123,354.21/x
  3. Step 3: Cross multiply
    220,143.81x = 303,830.55 × 123,354.21
  4. Step 4: Simplify right side
    220,143.81x = 37,478,777,469.12
  5. Step 5: Solve for x
    x = 37,478,777,469.12/220,143.81
  6. Step 6: Final answer
    x = 170,246.79

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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.