Home / 221,233.50-305,302.23-120,631.74

Finding the Fourth Proportional to 221,233.50, 305,302.23 and 120,631.74

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Solution

The fourth proportional to 221,233.50, 305,302.23 and 120,631.74 is: 166,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,233.50 : 305,302.23 = 120,631.74 : x
  2. Step 2: Convert to fraction form
    221,233.50/305,302.23 = 120,631.74/x
  3. Step 3: Cross multiply
    221,233.50x = 305,302.23 × 120,631.74
  4. Step 4: Simplify right side
    221,233.50x = 36,829,139,230.78
  5. Step 5: Solve for x
    x = 36,829,139,230.78/221,233.50
  6. Step 6: Final answer
    x = 166,471.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.