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Finding the Fourth Proportional to 303,902.60, 455,853.90 and 146,438.60

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Solution

The fourth proportional to 303,902.60, 455,853.90 and 146,438.60 is: 219,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,902.60 : 455,853.90 = 146,438.60 : x
  2. Step 2: Convert to fraction form
    303,902.60/455,853.90 = 146,438.60/x
  3. Step 3: Cross multiply
    303,902.60x = 455,853.90 × 146,438.60
  4. Step 4: Simplify right side
    303,902.60x = 66,754,606,920.54
  5. Step 5: Solve for x
    x = 66,754,606,920.54/303,902.60
  6. Step 6: Final answer
    x = 219,657.90

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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.