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Finding the Fourth Proportional to 217,745.76, 326,615.75 and 105,436.02

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Solution

The fourth proportional to 217,745.76, 326,615.75 and 105,436.02 is: 158,152.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,745.76 : 326,615.75 = 105,436.02 : x
  2. Step 2: Convert to fraction form
    217,745.76/326,615.75 = 105,436.02/x
  3. Step 3: Cross multiply
    217,745.76x = 326,615.75 × 105,436.02
  4. Step 4: Simplify right side
    217,745.76x = 34,437,064,222.13
  5. Step 5: Solve for x
    x = 34,437,064,222.13/217,745.76
  6. Step 6: Final answer
    x = 158,152.63

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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.