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Finding the Fourth Proportional to 220,477.55, 330,790.43 and 87,396.17

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Solution

The fourth proportional to 220,477.55, 330,790.43 and 87,396.17 is: 131,123.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,477.55 : 330,790.43 = 87,396.17 : x
  2. Step 2: Convert to fraction form
    220,477.55/330,790.43 = 87,396.17/x
  3. Step 3: Cross multiply
    220,477.55x = 330,790.43 × 87,396.17
  4. Step 4: Simplify right side
    220,477.55x = 28,909,815,219.19
  5. Step 5: Solve for x
    x = 28,909,815,219.19/220,477.55
  6. Step 6: Final answer
    x = 131,123.63

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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.