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Finding the Fourth Proportional to 281,404.84, 388,348.44 and 154,081.30

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Solution

The fourth proportional to 281,404.84, 388,348.44 and 154,081.30 is: 212,637.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,404.84 : 388,348.44 = 154,081.30 : x
  2. Step 2: Convert to fraction form
    281,404.84/388,348.44 = 154,081.30/x
  3. Step 3: Cross multiply
    281,404.84x = 388,348.44 × 154,081.30
  4. Step 4: Simplify right side
    281,404.84x = 59,837,232,488.17
  5. Step 5: Solve for x
    x = 59,837,232,488.17/281,404.84
  6. Step 6: Final answer
    x = 212,637.54

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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.