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Finding the Fourth Proportional to 326,043.60, 489,065.40 and 148,896.60

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Solution

The fourth proportional to 326,043.60, 489,065.40 and 148,896.60 is: 223,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,043.60 : 489,065.40 = 148,896.60 : x
  2. Step 2: Convert to fraction form
    326,043.60/489,065.40 = 148,896.60/x
  3. Step 3: Cross multiply
    326,043.60x = 489,065.40 × 148,896.60
  4. Step 4: Simplify right side
    326,043.60x = 72,820,175,237.64
  5. Step 5: Solve for x
    x = 72,820,175,237.64/326,043.60
  6. Step 6: Final answer
    x = 223,344.90

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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.