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Finding the Fourth Proportional to 274,356.32, 378,626.40 and 153,490.41

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Solution

The fourth proportional to 274,356.32, 378,626.40 and 153,490.41 is: 211,824.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,356.32 : 378,626.40 = 153,490.41 : x
  2. Step 2: Convert to fraction form
    274,356.32/378,626.40 = 153,490.41/x
  3. Step 3: Cross multiply
    274,356.32x = 378,626.40 × 153,490.41
  4. Step 4: Simplify right side
    274,356.32x = 58,115,521,372.82
  5. Step 5: Solve for x
    x = 58,115,521,372.82/274,356.32
  6. Step 6: Final answer
    x = 211,824.98

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1.5x scale

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.