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Finding the Fourth Proportional to 281,395.52, 388,305.60 and 154,050.56

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Solution

The fourth proportional to 281,395.52, 388,305.60 and 154,050.56 is: 212,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,395.52 : 388,305.60 = 154,050.56 : x
  2. Step 2: Convert to fraction form
    281,395.52/388,305.60 = 154,050.56/x
  3. Step 3: Cross multiply
    281,395.52x = 388,305.60 × 154,050.56
  4. Step 4: Simplify right side
    281,395.52x = 59,818,695,131.14
  5. Step 5: Solve for x
    x = 59,818,695,131.14/281,395.52
  6. Step 6: Final answer
    x = 212,578.70

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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.