Home / 391,976.21-540,937.74-230,801.60

Finding the Fourth Proportional to 391,976.21, 540,937.74 and 230,801.60

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Solution

The fourth proportional to 391,976.21, 540,937.74 and 230,801.60 is: 318,512.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,976.21 : 540,937.74 = 230,801.60 : x
  2. Step 2: Convert to fraction form
    391,976.21/540,937.74 = 230,801.60/x
  3. Step 3: Cross multiply
    391,976.21x = 540,937.74 × 230,801.60
  4. Step 4: Simplify right side
    391,976.21x = 124,849,298,110.23
  5. Step 5: Solve for x
    x = 124,849,298,110.23/391,976.21
  6. Step 6: Final answer
    x = 318,512.44

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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.