Home / 305,679.30-458,539.20-81,036.60

Finding the Fourth Proportional to 305,679.30, 458,539.20 and 81,036.60

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Solution

The fourth proportional to 305,679.30, 458,539.20 and 81,036.60 is: 121,560.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,679.30 : 458,539.20 = 81,036.60 : x
  2. Step 2: Convert to fraction form
    305,679.30/458,539.20 = 81,036.60/x
  3. Step 3: Cross multiply
    305,679.30x = 458,539.20 × 81,036.60
  4. Step 4: Simplify right side
    305,679.30x = 37,158,457,734.72
  5. Step 5: Solve for x
    x = 37,158,457,734.72/305,679.30
  6. Step 6: Final answer
    x = 121,560.27

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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.