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Finding the Fourth Proportional to 212,813.00, 319,313.54 and 111,586.88

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Solution

The fourth proportional to 212,813.00, 319,313.54 and 111,586.88 is: 167,429.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,813.00 : 319,313.54 = 111,586.88 : x
  2. Step 2: Convert to fraction form
    212,813.00/319,313.54 = 111,586.88/x
  3. Step 3: Cross multiply
    212,813.00x = 319,313.54 × 111,586.88
  4. Step 4: Simplify right side
    212,813.00x = 35,631,202,747.61
  5. Step 5: Solve for x
    x = 35,631,202,747.61/212,813.00
  6. Step 6: Final answer
    x = 167,429.63

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1.5x scale

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.