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Finding the Fourth Proportional to 203,568.28, 305,373.40 and 70,448.32

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Solution

The fourth proportional to 203,568.28, 305,373.40 and 70,448.32 is: 105,679.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,568.28 : 305,373.40 = 70,448.32 : x
  2. Step 2: Convert to fraction form
    203,568.28/305,373.40 = 70,448.32/x
  3. Step 3: Cross multiply
    203,568.28x = 305,373.40 × 70,448.32
  4. Step 4: Simplify right side
    203,568.28x = 21,513,043,002.69
  5. Step 5: Solve for x
    x = 21,513,043,002.69/203,568.28
  6. Step 6: Final answer
    x = 105,679.74

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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.