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Finding the Fourth Proportional to 368,051.40, 552,077.10 and 279,477.90

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Solution

The fourth proportional to 368,051.40, 552,077.10 and 279,477.90 is: 419,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,051.40 : 552,077.10 = 279,477.90 : x
  2. Step 2: Convert to fraction form
    368,051.40/552,077.10 = 279,477.90/x
  3. Step 3: Cross multiply
    368,051.40x = 552,077.10 × 279,477.90
  4. Step 4: Simplify right side
    368,051.40x = 154,293,348,546.09
  5. Step 5: Solve for x
    x = 154,293,348,546.09/368,051.40
  6. Step 6: Final answer
    x = 419,216.85

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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.