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Finding the Fourth Proportional to 299,485.23, 449,763.26 and 287,444.85

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Solution

The fourth proportional to 299,485.23, 449,763.26 and 287,444.85 is: 431,681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,485.23 : 449,763.26 = 287,444.85 : x
  2. Step 2: Convert to fraction form
    299,485.23/449,763.26 = 287,444.85/x
  3. Step 3: Cross multiply
    299,485.23x = 449,763.26 × 287,444.85
  4. Step 4: Simplify right side
    299,485.23x = 129,282,131,368.99
  5. Step 5: Solve for x
    x = 129,282,131,368.99/299,485.23
  6. Step 6: Final answer
    x = 431,681.16

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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.