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Finding the Fourth Proportional to 303,384.30, 455,204.03 and 162,978.90

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Solution

The fourth proportional to 303,384.30, 455,204.03 and 162,978.90 is: 244,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,384.30 : 455,204.03 = 162,978.90 : x
  2. Step 2: Convert to fraction form
    303,384.30/455,204.03 = 162,978.90/x
  3. Step 3: Cross multiply
    303,384.30x = 455,204.03 × 162,978.90
  4. Step 4: Simplify right side
    303,384.30x = 74,188,651,270.07
  5. Step 5: Solve for x
    x = 74,188,651,270.07/303,384.30
  6. Step 6: Final answer
    x = 244,536.88

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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.