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Finding the Fourth Proportional to 274,472.66, 378,772.21 and 153,613.94

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Solution

The fourth proportional to 274,472.66, 378,772.21 and 153,613.94 is: 211,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,472.66 : 378,772.21 = 153,613.94 : x
  2. Step 2: Convert to fraction form
    274,472.66/378,772.21 = 153,613.94/x
  3. Step 3: Cross multiply
    274,472.66x = 378,772.21 × 153,613.94
  4. Step 4: Simplify right side
    274,472.66x = 58,184,689,406.72
  5. Step 5: Solve for x
    x = 58,184,689,406.72/274,472.66
  6. Step 6: Final answer
    x = 211,987.20

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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.