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Finding the Fourth Proportional to 326,130.80, 489,196.20 and 302,511.20

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Solution

The fourth proportional to 326,130.80, 489,196.20 and 302,511.20 is: 453,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,130.80 : 489,196.20 = 302,511.20 : x
  2. Step 2: Convert to fraction form
    326,130.80/489,196.20 = 302,511.20/x
  3. Step 3: Cross multiply
    326,130.80x = 489,196.20 × 302,511.20
  4. Step 4: Simplify right side
    326,130.80x = 147,987,329,497.44
  5. Step 5: Solve for x
    x = 147,987,329,497.44/326,130.80
  6. Step 6: Final answer
    x = 453,766.80

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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.