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Finding the Fourth Proportional to 281,084.94, 421,253.01 and 103,427.58

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Solution

The fourth proportional to 281,084.94, 421,253.01 and 103,427.58 is: 155,003.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,084.94 : 421,253.01 = 103,427.58 : x
  2. Step 2: Convert to fraction form
    281,084.94/421,253.01 = 103,427.58/x
  3. Step 3: Cross multiply
    281,084.94x = 421,253.01 × 103,427.58
  4. Step 4: Simplify right side
    281,084.94x = 43,569,179,392.02
  5. Step 5: Solve for x
    x = 43,569,179,392.02/281,084.94
  6. Step 6: Final answer
    x = 155,003.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.