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Finding the Fourth Proportional to 216,970.68, 325,507.98 and 90,540.59

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Solution

The fourth proportional to 216,970.68, 325,507.98 and 90,540.59 is: 135,832.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,970.68 : 325,507.98 = 90,540.59 : x
  2. Step 2: Convert to fraction form
    216,970.68/325,507.98 = 90,540.59/x
  3. Step 3: Cross multiply
    216,970.68x = 325,507.98 × 90,540.59
  4. Step 4: Simplify right side
    216,970.68x = 29,471,682,931.37
  5. Step 5: Solve for x
    x = 29,471,682,931.37/216,970.68
  6. Step 6: Final answer
    x = 135,832.56

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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.