Home / 389,923.75-538,096.22-211,075.75

Finding the Fourth Proportional to 389,923.75, 538,096.22 and 211,075.75

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Solution

The fourth proportional to 389,923.75, 538,096.22 and 211,075.75 is: 291,285.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,923.75 : 538,096.22 = 211,075.75 : x
  2. Step 2: Convert to fraction form
    389,923.75/538,096.22 = 211,075.75/x
  3. Step 3: Cross multiply
    389,923.75x = 538,096.22 × 211,075.75
  4. Step 4: Simplify right side
    389,923.75x = 113,579,063,208.67
  5. Step 5: Solve for x
    x = 113,579,063,208.67/389,923.75
  6. Step 6: Final answer
    x = 291,285.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.