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Finding the Fourth Proportional to 311,485.18, 466,842.31 and 221,384.33

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Solution

The fourth proportional to 311,485.18, 466,842.31 and 221,384.33 is: 331,802.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,485.18 : 466,842.31 = 221,384.33 : x
  2. Step 2: Convert to fraction form
    311,485.18/466,842.31 = 221,384.33/x
  3. Step 3: Cross multiply
    311,485.18x = 466,842.31 × 221,384.33
  4. Step 4: Simplify right side
    311,485.18x = 103,351,570,908.08
  5. Step 5: Solve for x
    x = 103,351,570,908.08/311,485.18
  6. Step 6: Final answer
    x = 331,802.53

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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.