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Finding the Fourth Proportional to 221,900.40, 306,158.40 and 137,044.80

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Solution

The fourth proportional to 221,900.40, 306,158.40 and 137,044.80 is: 189,082.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,900.40 : 306,158.40 = 137,044.80 : x
  2. Step 2: Convert to fraction form
    221,900.40/306,158.40 = 137,044.80/x
  3. Step 3: Cross multiply
    221,900.40x = 306,158.40 × 137,044.80
  4. Step 4: Simplify right side
    221,900.40x = 41,957,416,696.32
  5. Step 5: Solve for x
    x = 41,957,416,696.32/221,900.40
  6. Step 6: Final answer
    x = 189,082.20

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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.