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Finding the Fourth Proportional to 287,576.70, 431,556.99 and 100,588.18

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Solution

The fourth proportional to 287,576.70, 431,556.99 and 100,588.18 is: 150,949.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,576.70 : 431,556.99 = 100,588.18 : x
  2. Step 2: Convert to fraction form
    287,576.70/431,556.99 = 100,588.18/x
  3. Step 3: Cross multiply
    287,576.70x = 431,556.99 × 100,588.18
  4. Step 4: Simplify right side
    287,576.70x = 43,409,532,190.38
  5. Step 5: Solve for x
    x = 43,409,532,190.38/287,576.70
  6. Step 6: Final answer
    x = 150,949.41

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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.