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Finding the Fourth Proportional to 311,561.99, 467,156.14 and 142,871.01

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Solution

The fourth proportional to 311,561.99, 467,156.14 and 142,871.01 is: 214,220.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,561.99 : 467,156.14 = 142,871.01 : x
  2. Step 2: Convert to fraction form
    311,561.99/467,156.14 = 142,871.01/x
  3. Step 3: Cross multiply
    311,561.99x = 467,156.14 × 142,871.01
  4. Step 4: Simplify right side
    311,561.99x = 66,743,069,549.50
  5. Step 5: Solve for x
    x = 66,743,069,549.50/311,561.99
  6. Step 6: Final answer
    x = 214,220.83

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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.