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Finding the Fourth Proportional to 274,551.24, 378,888.66 and 153,691.80

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Solution

The fourth proportional to 274,551.24, 378,888.66 and 153,691.80 is: 212,099.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,551.24 : 378,888.66 = 153,691.80 : x
  2. Step 2: Convert to fraction form
    274,551.24/378,888.66 = 153,691.80/x
  3. Step 3: Cross multiply
    274,551.24x = 378,888.66 × 153,691.80
  4. Step 4: Simplify right side
    274,551.24x = 58,232,080,154.99
  5. Step 5: Solve for x
    x = 58,232,080,154.99/274,551.24
  6. Step 6: Final answer
    x = 212,099.13

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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.