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Finding the Fourth Proportional to 395,699.78, 546,033.35 and 223,632.50

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Solution

The fourth proportional to 395,699.78, 546,033.35 and 223,632.50 is: 308,594.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,699.78 : 546,033.35 = 223,632.50 : x
  2. Step 2: Convert to fraction form
    395,699.78/546,033.35 = 223,632.50/x
  3. Step 3: Cross multiply
    395,699.78x = 546,033.35 × 223,632.50
  4. Step 4: Simplify right side
    395,699.78x = 122,110,800,972.79
  5. Step 5: Solve for x
    x = 122,110,800,972.79/395,699.78
  6. Step 6: Final answer
    x = 308,594.56

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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.