Home / 389,986.03-538,147.32-224,419.36

Finding the Fourth Proportional to 389,986.03, 538,147.32 and 224,419.36

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Solution

The fourth proportional to 389,986.03, 538,147.32 and 224,419.36 is: 309,679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,986.03 : 538,147.32 = 224,419.36 : x
  2. Step 2: Convert to fraction form
    389,986.03/538,147.32 = 224,419.36/x
  3. Step 3: Cross multiply
    389,986.03x = 538,147.32 × 224,419.36
  4. Step 4: Simplify right side
    389,986.03x = 120,770,677,140.12
  5. Step 5: Solve for x
    x = 120,770,677,140.12/389,986.03
  6. Step 6: Final answer
    x = 309,679.50

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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.