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Finding the Fourth Proportional to 326,097.30, 489,145.95 and 266,999.70

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Solution

The fourth proportional to 326,097.30, 489,145.95 and 266,999.70 is: 400,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,097.30 : 489,145.95 = 266,999.70 : x
  2. Step 2: Convert to fraction form
    326,097.30/489,145.95 = 266,999.70/x
  3. Step 3: Cross multiply
    326,097.30x = 489,145.95 × 266,999.70
  4. Step 4: Simplify right side
    326,097.30x = 130,601,821,906.22
  5. Step 5: Solve for x
    x = 130,601,821,906.22/326,097.30
  6. Step 6: Final answer
    x = 400,499.55

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Similar ratio
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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.