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Finding the Fourth Proportional to 281,341.35, 388,250.42 and 154,015.83

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Solution

The fourth proportional to 281,341.35, 388,250.42 and 154,015.83 is: 212,541.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,341.35 : 388,250.42 = 154,015.83 : x
  2. Step 2: Convert to fraction form
    281,341.35/388,250.42 = 154,015.83/x
  3. Step 3: Cross multiply
    281,341.35x = 388,250.42 × 154,015.83
  4. Step 4: Simplify right side
    281,341.35x = 59,796,709,914.07
  5. Step 5: Solve for x
    x = 59,796,709,914.07/281,341.35
  6. Step 6: Final answer
    x = 212,541.49

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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.