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Finding the Fourth Proportional to 274,558.63, 378,888.02 and 153,700.91

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Solution

The fourth proportional to 274,558.63, 378,888.02 and 153,700.91 is: 212,105.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,558.63 : 378,888.02 = 153,700.91 : x
  2. Step 2: Convert to fraction form
    274,558.63/378,888.02 = 153,700.91/x
  3. Step 3: Cross multiply
    274,558.63x = 378,888.02 × 153,700.91
  4. Step 4: Simplify right side
    274,558.63x = 58,235,433,379.44
  5. Step 5: Solve for x
    x = 58,235,433,379.44/274,558.63
  6. Step 6: Final answer
    x = 212,105.64

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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.