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Finding the Fourth Proportional to 216,778.56, 325,201.59 and 128,095.98

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Solution

The fourth proportional to 216,778.56, 325,201.59 and 128,095.98 is: 192,163.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,778.56 : 325,201.59 = 128,095.98 : x
  2. Step 2: Convert to fraction form
    216,778.56/325,201.59 = 128,095.98/x
  3. Step 3: Cross multiply
    216,778.56x = 325,201.59 × 128,095.98
  4. Step 4: Simplify right side
    216,778.56x = 41,657,016,368.61
  5. Step 5: Solve for x
    x = 41,657,016,368.61/216,778.56
  6. Step 6: Final answer
    x = 192,163.91

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1.5x scale

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.