Home / 221,428.60-331,916.10-108,935.80

Finding the Fourth Proportional to 221,428.60, 331,916.10 and 108,935.80

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Solution

The fourth proportional to 221,428.60, 331,916.10 and 108,935.80 is: 163,292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,428.60 : 331,916.10 = 108,935.80 : x
  2. Step 2: Convert to fraction form
    221,428.60/331,916.10 = 108,935.80/x
  3. Step 3: Cross multiply
    221,428.60x = 331,916.10 × 108,935.80
  4. Step 4: Simplify right side
    221,428.60x = 36,157,545,886.38
  5. Step 5: Solve for x
    x = 36,157,545,886.38/221,428.60
  6. Step 6: Final answer
    x = 163,292.12

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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.