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Finding the Fourth Proportional to 216,851.54, 325,102.01 and 90,588.51

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Solution

The fourth proportional to 216,851.54, 325,102.01 and 90,588.51 is: 135,809.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,851.54 : 325,102.01 = 90,588.51 : x
  2. Step 2: Convert to fraction form
    216,851.54/325,102.01 = 90,588.51/x
  3. Step 3: Cross multiply
    216,851.54x = 325,102.01 × 90,588.51
  4. Step 4: Simplify right side
    216,851.54x = 29,450,506,230.96
  5. Step 5: Solve for x
    x = 29,450,506,230.96/216,851.54
  6. Step 6: Final answer
    x = 135,809.54

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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.