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Finding the Fourth Proportional to 273,989.52, 378,098 and 153,131.28

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Solution

The fourth proportional to 273,989.52, 378,098 and 153,131.28 is: 211,316.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,989.52 : 378,098 = 153,131.28 : x
  2. Step 2: Convert to fraction form
    273,989.52/378,098 = 153,131.28/x
  3. Step 3: Cross multiply
    273,989.52x = 378,098 × 153,131.28
  4. Step 4: Simplify right side
    273,989.52x = 57,898,630,705.44
  5. Step 5: Solve for x
    x = 57,898,630,705.44/273,989.52
  6. Step 6: Final answer
    x = 211,316.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.