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Finding the Fourth Proportional to 281,140.80, 421,768.80 and 94,286.40

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Solution

The fourth proportional to 281,140.80, 421,768.80 and 94,286.40 is: 141,448.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,140.80 : 421,768.80 = 94,286.40 : x
  2. Step 2: Convert to fraction form
    281,140.80/421,768.80 = 94,286.40/x
  3. Step 3: Cross multiply
    281,140.80x = 421,768.80 × 94,286.40
  4. Step 4: Simplify right side
    281,140.80x = 39,767,061,784.32
  5. Step 5: Solve for x
    x = 39,767,061,784.32/281,140.80
  6. Step 6: Final answer
    x = 141,448.92

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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.