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Finding the Fourth Proportional to 221,606.70, 311,036.70 and 221,606.70

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Solution

The fourth proportional to 221,606.70, 311,036.70 and 221,606.70 is: 311,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,606.70 : 311,036.70 = 221,606.70 : x
  2. Step 2: Convert to fraction form
    221,606.70/311,036.70 = 221,606.70/x
  3. Step 3: Cross multiply
    221,606.70x = 311,036.70 × 221,606.70
  4. Step 4: Simplify right side
    221,606.70x = 68,927,816,665.89
  5. Step 5: Solve for x
    x = 68,927,816,665.89/221,606.70
  6. Step 6: Final answer
    x = 311,036.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.