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Finding the Fourth Proportional to 326,866.18, 489,845.67 and 148,938.34

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Solution

The fourth proportional to 326,866.18, 489,845.67 and 148,938.34 is: 223,200.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,866.18 : 489,845.67 = 148,938.34 : x
  2. Step 2: Convert to fraction form
    326,866.18/489,845.67 = 148,938.34/x
  3. Step 3: Cross multiply
    326,866.18x = 489,845.67 × 148,938.34
  4. Step 4: Simplify right side
    326,866.18x = 72,956,800,945.99
  5. Step 5: Solve for x
    x = 72,956,800,945.99/326,866.18
  6. Step 6: Final answer
    x = 223,200.82

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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.