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Finding the Fourth Proportional to 299,430.90, 449,474.40 and 187,237.80

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Solution

The fourth proportional to 299,430.90, 449,474.40 and 187,237.80 is: 281,061.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,430.90 : 449,474.40 = 187,237.80 : x
  2. Step 2: Convert to fraction form
    299,430.90/449,474.40 = 187,237.80/x
  3. Step 3: Cross multiply
    299,430.90x = 449,474.40 × 187,237.80
  4. Step 4: Simplify right side
    299,430.90x = 84,158,597,812.32
  5. Step 5: Solve for x
    x = 84,158,597,812.32/299,430.90
  6. Step 6: Final answer
    x = 281,061.83

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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.