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Finding the Fourth Proportional to 279,368.10, 419,052.15 and 101,880.90

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Solution

The fourth proportional to 279,368.10, 419,052.15 and 101,880.90 is: 152,821.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,368.10 : 419,052.15 = 101,880.90 : x
  2. Step 2: Convert to fraction form
    279,368.10/419,052.15 = 101,880.90/x
  3. Step 3: Cross multiply
    279,368.10x = 419,052.15 × 101,880.90
  4. Step 4: Simplify right side
    279,368.10x = 42,693,410,188.94
  5. Step 5: Solve for x
    x = 42,693,410,188.94/279,368.10
  6. Step 6: Final answer
    x = 152,821.35

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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.