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Finding the Fourth Proportional to 274,424.72, 378,651.74 and 153,542.55

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Solution

The fourth proportional to 274,424.72, 378,651.74 and 153,542.55 is: 211,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,424.72 : 378,651.74 = 153,542.55 : x
  2. Step 2: Convert to fraction form
    274,424.72/378,651.74 = 153,542.55/x
  3. Step 3: Cross multiply
    274,424.72x = 378,651.74 × 153,542.55
  4. Step 4: Simplify right side
    274,424.72x = 58,139,152,953.82
  5. Step 5: Solve for x
    x = 58,139,152,953.82/274,424.72
  6. Step 6: Final answer
    x = 211,858.30

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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.