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Finding the Fourth Proportional to 274,362.90, 378,635.51 and 153,496.95

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Solution

The fourth proportional to 274,362.90, 378,635.51 and 153,496.95 is: 211,834.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,362.90 : 378,635.51 = 153,496.95 : x
  2. Step 2: Convert to fraction form
    274,362.90/378,635.51 = 153,496.95/x
  3. Step 3: Cross multiply
    274,362.90x = 378,635.51 × 153,496.95
  4. Step 4: Simplify right side
    274,362.90x = 58,119,395,179.21
  5. Step 5: Solve for x
    x = 58,119,395,179.21/274,362.90
  6. Step 6: Final answer
    x = 211,834.02

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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.