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Finding the Fourth Proportional to 326,145.60, 489,218.40 and 148,998.60

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Solution

The fourth proportional to 326,145.60, 489,218.40 and 148,998.60 is: 223,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,145.60 : 489,218.40 = 148,998.60 : x
  2. Step 2: Convert to fraction form
    326,145.60/489,218.40 = 148,998.60/x
  3. Step 3: Cross multiply
    326,145.60x = 489,218.40 × 148,998.60
  4. Step 4: Simplify right side
    326,145.60x = 72,892,856,694.24
  5. Step 5: Solve for x
    x = 72,892,856,694.24/326,145.60
  6. Step 6: Final answer
    x = 223,497.90

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1.5x scale

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.