Home / 216,531.44-324,840.96-90,181.20

Finding the Fourth Proportional to 216,531.44, 324,840.96 and 90,181.20

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Solution

The fourth proportional to 216,531.44, 324,840.96 and 90,181.20 is: 135,290.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,531.44 : 324,840.96 = 90,181.20 : x
  2. Step 2: Convert to fraction form
    216,531.44/324,840.96 = 90,181.20/x
  3. Step 3: Cross multiply
    216,531.44x = 324,840.96 × 90,181.20
  4. Step 4: Simplify right side
    216,531.44x = 29,294,547,581.95
  5. Step 5: Solve for x
    x = 29,294,547,581.95/216,531.44
  6. Step 6: Final answer
    x = 135,290.04

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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.