Home / 319,629.40-479,006.70-212,709.40

Finding the Fourth Proportional to 319,629.40, 479,006.70 and 212,709.40

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Solution

The fourth proportional to 319,629.40, 479,006.70 and 212,709.40 is: 318,773.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,629.40 : 479,006.70 = 212,709.40 : x
  2. Step 2: Convert to fraction form
    319,629.40/479,006.70 = 212,709.40/x
  3. Step 3: Cross multiply
    319,629.40x = 479,006.70 × 212,709.40
  4. Step 4: Simplify right side
    319,629.40x = 101,889,227,752.98
  5. Step 5: Solve for x
    x = 101,889,227,752.98/319,629.40
  6. Step 6: Final answer
    x = 318,773.02

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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.