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Finding the Fourth Proportional to 303,628.20, 455,717.70 and 153,972.60

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Solution

The fourth proportional to 303,628.20, 455,717.70 and 153,972.60 is: 231,098.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,628.20 : 455,717.70 = 153,972.60 : x
  2. Step 2: Convert to fraction form
    303,628.20/455,717.70 = 153,972.60/x
  3. Step 3: Cross multiply
    303,628.20x = 455,717.70 × 153,972.60
  4. Step 4: Simplify right side
    303,628.20x = 70,168,039,135.02
  5. Step 5: Solve for x
    x = 70,168,039,135.02/303,628.20
  6. Step 6: Final answer
    x = 231,098.56

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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.