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Finding the Fourth Proportional to 274,362.66, 378,635.19 and 153,496.74

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Solution

The fourth proportional to 274,362.66, 378,635.19 and 153,496.74 is: 211,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,362.66 : 378,635.19 = 153,496.74 : x
  2. Step 2: Convert to fraction form
    274,362.66/378,635.19 = 153,496.74/x
  3. Step 3: Cross multiply
    274,362.66x = 378,635.19 × 153,496.74
  4. Step 4: Simplify right side
    274,362.66x = 58,119,267,314.28
  5. Step 5: Solve for x
    x = 58,119,267,314.28/274,362.66
  6. Step 6: Final answer
    x = 211,833.74

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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.