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Finding the Fourth Proportional to 220,140.81, 303,826.41 and 123,351.21

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Solution

The fourth proportional to 220,140.81, 303,826.41 and 123,351.21 is: 170,242.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,140.81 : 303,826.41 = 123,351.21 : x
  2. Step 2: Convert to fraction form
    220,140.81/303,826.41 = 123,351.21/x
  3. Step 3: Cross multiply
    220,140.81x = 303,826.41 × 123,351.21
  4. Step 4: Simplify right side
    220,140.81x = 37,477,355,303.46
  5. Step 5: Solve for x
    x = 37,477,355,303.46/220,140.81
  6. Step 6: Final answer
    x = 170,242.65

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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.