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Finding the Fourth Proportional to 281,393.52, 388,302.84 and 154,048.56

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Solution

The fourth proportional to 281,393.52, 388,302.84 and 154,048.56 is: 212,575.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,393.52 : 388,302.84 = 154,048.56 : x
  2. Step 2: Convert to fraction form
    281,393.52/388,302.84 = 154,048.56/x
  3. Step 3: Cross multiply
    281,393.52x = 388,302.84 × 154,048.56
  4. Step 4: Simplify right side
    281,393.52x = 59,817,493,345.91
  5. Step 5: Solve for x
    x = 59,817,493,345.91/281,393.52
  6. Step 6: Final answer
    x = 212,575.94

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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.