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Finding the Fourth Proportional to 281,370.17, 421,923.89 and 101,431.89

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Solution

The fourth proportional to 281,370.17, 421,923.89 and 101,431.89 is: 152,100.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,370.17 : 421,923.89 = 101,431.89 : x
  2. Step 2: Convert to fraction form
    281,370.17/421,923.89 = 101,431.89/x
  3. Step 3: Cross multiply
    281,370.17x = 421,923.89 × 101,431.89
  4. Step 4: Simplify right side
    281,370.17x = 42,796,537,091.69
  5. Step 5: Solve for x
    x = 42,796,537,091.69/281,370.17
  6. Step 6: Final answer
    x = 152,100.48

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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.