Home / 203,667.28-305,428.02-70,511.79

Finding the Fourth Proportional to 203,667.28, 305,428.02 and 70,511.79

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Solution

The fourth proportional to 203,667.28, 305,428.02 and 70,511.79 is: 105,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,667.28 : 305,428.02 = 70,511.79 : x
  2. Step 2: Convert to fraction form
    203,667.28/305,428.02 = 70,511.79/x
  3. Step 3: Cross multiply
    203,667.28x = 305,428.02 × 70,511.79
  4. Step 4: Simplify right side
    203,667.28x = 21,536,276,406.36
  5. Step 5: Solve for x
    x = 21,536,276,406.36/203,667.28
  6. Step 6: Final answer
    x = 105,742.45

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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.