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Finding the Fourth Proportional to 221,007.27, 304,990.07 and 120,405.27

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Solution

The fourth proportional to 221,007.27, 304,990.07 and 120,405.27 is: 166,159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,007.27 : 304,990.07 = 120,405.27 : x
  2. Step 2: Convert to fraction form
    221,007.27/304,990.07 = 120,405.27/x
  3. Step 3: Cross multiply
    221,007.27x = 304,990.07 × 120,405.27
  4. Step 4: Simplify right side
    221,007.27x = 36,722,411,123.64
  5. Step 5: Solve for x
    x = 36,722,411,123.64/221,007.27
  6. Step 6: Final answer
    x = 166,159.29

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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.