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Finding the Fourth Proportional to 216,969.39, 325,506.04 and 90,539.30

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Solution

The fourth proportional to 216,969.39, 325,506.04 and 90,539.30 is: 135,830.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,969.39 : 325,506.04 = 90,539.30 : x
  2. Step 2: Convert to fraction form
    216,969.39/325,506.04 = 90,539.30/x
  3. Step 3: Cross multiply
    216,969.39x = 325,506.04 × 90,539.30
  4. Step 4: Simplify right side
    216,969.39x = 29,471,089,007.37
  5. Step 5: Solve for x
    x = 29,471,089,007.37/216,969.39
  6. Step 6: Final answer
    x = 135,830.63

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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.