Home / 389,928.24-538,137.18-236,931.21

Finding the Fourth Proportional to 389,928.24, 538,137.18 and 236,931.21

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Solution

The fourth proportional to 389,928.24, 538,137.18 and 236,931.21 is: 326,987.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,928.24 : 538,137.18 = 236,931.21 : x
  2. Step 2: Convert to fraction form
    389,928.24/538,137.18 = 236,931.21/x
  3. Step 3: Cross multiply
    389,928.24x = 538,137.18 × 236,931.21
  4. Step 4: Simplify right side
    389,928.24x = 127,501,493,203.39
  5. Step 5: Solve for x
    x = 127,501,493,203.39/389,928.24
  6. Step 6: Final answer
    x = 326,987.07

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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.