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Finding the Fourth Proportional to 203,263.56, 304,873.47 and 70,128.72

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Solution

The fourth proportional to 203,263.56, 304,873.47 and 70,128.72 is: 105,185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,263.56 : 304,873.47 = 70,128.72 : x
  2. Step 2: Convert to fraction form
    203,263.56/304,873.47 = 70,128.72/x
  3. Step 3: Cross multiply
    203,263.56x = 304,873.47 × 70,128.72
  4. Step 4: Simplify right side
    203,263.56x = 21,380,386,213.06
  5. Step 5: Solve for x
    x = 21,380,386,213.06/203,263.56
  6. Step 6: Final answer
    x = 105,185.53

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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.