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Finding the Fourth Proportional to 426,978.88, 589,230.96 and 235,992.28

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Solution

The fourth proportional to 426,978.88, 589,230.96 and 235,992.28 is: 325,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,978.88 : 589,230.96 = 235,992.28 : x
  2. Step 2: Convert to fraction form
    426,978.88/589,230.96 = 235,992.28/x
  3. Step 3: Cross multiply
    426,978.88x = 589,230.96 × 235,992.28
  4. Step 4: Simplify right side
    426,978.88x = 139,053,957,696.99
  5. Step 5: Solve for x
    x = 139,053,957,696.99/426,978.88
  6. Step 6: Final answer
    x = 325,669.40

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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.