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Finding the Fourth Proportional to 326,682.90, 489,368.23 and 148,945.41

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Solution

The fourth proportional to 326,682.90, 489,368.23 and 148,945.41 is: 223,118.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,682.90 : 489,368.23 = 148,945.41 : x
  2. Step 2: Convert to fraction form
    326,682.90/489,368.23 = 148,945.41/x
  3. Step 3: Cross multiply
    326,682.90x = 489,368.23 × 148,945.41
  4. Step 4: Simplify right side
    326,682.90x = 72,889,151,658.32
  5. Step 5: Solve for x
    x = 72,889,151,658.32/326,682.90
  6. Step 6: Final answer
    x = 223,118.97

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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.