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Finding the Fourth Proportional to 326,565.41, 489,886.90 and 200,147.09

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Solution

The fourth proportional to 326,565.41, 489,886.90 and 200,147.09 is: 300,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,565.41 : 489,886.90 = 200,147.09 : x
  2. Step 2: Convert to fraction form
    326,565.41/489,886.90 = 200,147.09/x
  3. Step 3: Cross multiply
    326,565.41x = 489,886.90 × 200,147.09
  4. Step 4: Simplify right side
    326,565.41x = 98,049,434,514.32
  5. Step 5: Solve for x
    x = 98,049,434,514.32/326,565.41
  6. Step 6: Final answer
    x = 300,244.40

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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.