Home / 325,228.55-487,827.79-85,336.52

Finding the Fourth Proportional to 325,228.55, 487,827.79 and 85,336.52

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Solution

The fourth proportional to 325,228.55, 487,827.79 and 85,336.52 is: 128,000.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,228.55 : 487,827.79 = 85,336.52 : x
  2. Step 2: Convert to fraction form
    325,228.55/487,827.79 = 85,336.52/x
  3. Step 3: Cross multiply
    325,228.55x = 487,827.79 × 85,336.52
  4. Step 4: Simplify right side
    325,228.55x = 41,629,526,964.12
  5. Step 5: Solve for x
    x = 41,629,526,964.12/325,228.55
  6. Step 6: Final answer
    x = 128,000.84

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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.