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Finding the Fourth Proportional to 449,877.78, 620,812.49 and 266,235.39

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Solution

The fourth proportional to 449,877.78, 620,812.49 and 266,235.39 is: 367,393.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,877.78 : 620,812.49 = 266,235.39 : x
  2. Step 2: Convert to fraction form
    449,877.78/620,812.49 = 266,235.39/x
  3. Step 3: Cross multiply
    449,877.78x = 620,812.49 × 266,235.39
  4. Step 4: Simplify right side
    449,877.78x = 165,282,254,060.84
  5. Step 5: Solve for x
    x = 165,282,254,060.84/449,877.78
  6. Step 6: Final answer
    x = 367,393.68

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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.