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Finding the Fourth Proportional to 415,111.95, 622,848.87 and 145,433.57

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Solution

The fourth proportional to 415,111.95, 622,848.87 and 145,433.57 is: 218,213.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,111.95 : 622,848.87 = 145,433.57 : x
  2. Step 2: Convert to fraction form
    415,111.95/622,848.87 = 145,433.57/x
  3. Step 3: Cross multiply
    415,111.95x = 622,848.87 × 145,433.57
  4. Step 4: Simplify right side
    415,111.95x = 90,583,131,620.32
  5. Step 5: Solve for x
    x = 90,583,131,620.32/415,111.95
  6. Step 6: Final answer
    x = 218,213.74

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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.