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Finding the Fourth Proportional to 326,683.38, 489,368.97 and 148,945.89

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Solution

The fourth proportional to 326,683.38, 489,368.97 and 148,945.89 is: 223,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,683.38 : 489,368.97 = 148,945.89 : x
  2. Step 2: Convert to fraction form
    326,683.38/489,368.97 = 148,945.89/x
  3. Step 3: Cross multiply
    326,683.38x = 489,368.97 × 148,945.89
  4. Step 4: Simplify right side
    326,683.38x = 72,889,496,775.03
  5. Step 5: Solve for x
    x = 72,889,496,775.03/326,683.38
  6. Step 6: Final answer
    x = 223,119.70

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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.