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Finding the Fourth Proportional to 426,071.90, 587,978.78 and 235,085.27

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Solution

The fourth proportional to 426,071.90, 587,978.78 and 235,085.27 is: 324,417.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,071.90 : 587,978.78 = 235,085.27 : x
  2. Step 2: Convert to fraction form
    426,071.90/587,978.78 = 235,085.27/x
  3. Step 3: Cross multiply
    426,071.90x = 587,978.78 × 235,085.27
  4. Step 4: Simplify right side
    426,071.90x = 138,225,146,135.25
  5. Step 5: Solve for x
    x = 138,225,146,135.25/426,071.90
  6. Step 6: Final answer
    x = 324,417.42

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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.