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Finding the Fourth Proportional to 300,840.95, 451,111.18 and 98,410.64

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Solution

The fourth proportional to 300,840.95, 451,111.18 and 98,410.64 is: 147,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,840.95 : 451,111.18 = 98,410.64 : x
  2. Step 2: Convert to fraction form
    300,840.95/451,111.18 = 98,410.64/x
  3. Step 3: Cross multiply
    300,840.95x = 451,111.18 × 98,410.64
  4. Step 4: Simplify right side
    300,840.95x = 44,394,137,679.40
  5. Step 5: Solve for x
    x = 44,394,137,679.40/300,840.95
  6. Step 6: Final answer
    x = 147,566.80

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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.