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Finding the Fourth Proportional to 203,511.53, 304,930.32 and 70,317.76

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Solution

The fourth proportional to 203,511.53, 304,930.32 and 70,317.76 is: 105,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,511.53 : 304,930.32 = 70,317.76 : x
  2. Step 2: Convert to fraction form
    203,511.53/304,930.32 = 70,317.76/x
  3. Step 3: Cross multiply
    203,511.53x = 304,930.32 × 70,317.76
  4. Step 4: Simplify right side
    203,511.53x = 21,442,015,533.83
  5. Step 5: Solve for x
    x = 21,442,015,533.83/203,511.53
  6. Step 6: Final answer
    x = 105,360.20

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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.