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Finding the Fourth Proportional to 449,815.14, 620,726.63 and 266,172.75

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Solution

The fourth proportional to 449,815.14, 620,726.63 and 266,172.75 is: 367,307.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,815.14 : 620,726.63 = 266,172.75 : x
  2. Step 2: Convert to fraction form
    449,815.14/620,726.63 = 266,172.75/x
  3. Step 3: Cross multiply
    449,815.14x = 620,726.63 × 266,172.75
  4. Step 4: Simplify right side
    449,815.14x = 165,220,512,774.47
  5. Step 5: Solve for x
    x = 165,220,512,774.47/449,815.14
  6. Step 6: Final answer
    x = 367,307.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.