Home / 221,026.40-331,539.60-80,885.60

Finding the Fourth Proportional to 221,026.40, 331,539.60 and 80,885.60

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Solution

The fourth proportional to 221,026.40, 331,539.60 and 80,885.60 is: 121,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,026.40 : 331,539.60 = 80,885.60 : x
  2. Step 2: Convert to fraction form
    221,026.40/331,539.60 = 80,885.60/x
  3. Step 3: Cross multiply
    221,026.40x = 331,539.60 × 80,885.60
  4. Step 4: Simplify right side
    221,026.40x = 26,816,779,469.76
  5. Step 5: Solve for x
    x = 26,816,779,469.76/221,026.40
  6. Step 6: Final answer
    x = 121,328.40

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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.