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Finding the Fourth Proportional to 395,681.40, 546,067.08 and 223,539.60

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Solution

The fourth proportional to 395,681.40, 546,067.08 and 223,539.60 is: 308,499.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,681.40 : 546,067.08 = 223,539.60 : x
  2. Step 2: Convert to fraction form
    395,681.40/546,067.08 = 223,539.60/x
  3. Step 3: Cross multiply
    395,681.40x = 546,067.08 × 223,539.60
  4. Step 4: Simplify right side
    395,681.40x = 122,067,616,636.37
  5. Step 5: Solve for x
    x = 122,067,616,636.37/395,681.40
  6. Step 6: Final answer
    x = 308,499.76

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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.