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Finding the Fourth Proportional to 274,374.18, 378,614.79 and 153,505.98

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Solution

The fourth proportional to 274,374.18, 378,614.79 and 153,505.98 is: 211,826.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,374.18 : 378,614.79 = 153,505.98 : x
  2. Step 2: Convert to fraction form
    274,374.18/378,614.79 = 153,505.98/x
  3. Step 3: Cross multiply
    274,374.18x = 378,614.79 × 153,505.98
  4. Step 4: Simplify right side
    274,374.18x = 58,119,634,381.44
  5. Step 5: Solve for x
    x = 58,119,634,381.44/274,374.18
  6. Step 6: Final answer
    x = 211,826.18

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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.