Home / 221,075.41-331,488.55-76,915.12

Finding the Fourth Proportional to 221,075.41, 331,488.55 and 76,915.12

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Solution

The fourth proportional to 221,075.41, 331,488.55 and 76,915.12 is: 115,329.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,075.41 : 331,488.55 = 76,915.12 : x
  2. Step 2: Convert to fraction form
    221,075.41/331,488.55 = 76,915.12/x
  3. Step 3: Cross multiply
    221,075.41x = 331,488.55 × 76,915.12
  4. Step 4: Simplify right side
    221,075.41x = 25,496,481,601.88
  5. Step 5: Solve for x
    x = 25,496,481,601.88/221,075.41
  6. Step 6: Final answer
    x = 115,329.34

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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.