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Finding the Fourth Proportional to 279,365.90, 419,111.29 and 101,872.89

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Solution

The fourth proportional to 279,365.90, 419,111.29 and 101,872.89 is: 152,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,365.90 : 419,111.29 = 101,872.89 : x
  2. Step 2: Convert to fraction form
    279,365.90/419,111.29 = 101,872.89/x
  3. Step 3: Cross multiply
    279,365.90x = 419,111.29 × 101,872.89
  4. Step 4: Simplify right side
    279,365.90x = 42,696,078,184.75
  5. Step 5: Solve for x
    x = 42,696,078,184.75/279,365.90
  6. Step 6: Final answer
    x = 152,832.10

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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.