Home / 319,075.49-478,576.17-82,399.56

Finding the Fourth Proportional to 319,075.49, 478,576.17 and 82,399.56

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Solution

The fourth proportional to 319,075.49, 478,576.17 and 82,399.56 is: 123,589.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,075.49 : 478,576.17 = 82,399.56 : x
  2. Step 2: Convert to fraction form
    319,075.49/478,576.17 = 82,399.56/x
  3. Step 3: Cross multiply
    319,075.49x = 478,576.17 × 82,399.56
  4. Step 4: Simplify right side
    319,075.49x = 39,434,465,834.49
  5. Step 5: Solve for x
    x = 39,434,465,834.49/319,075.49
  6. Step 6: Final answer
    x = 123,589.77

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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.