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Finding the Fourth Proportional to 326,125.20, 489,187.80 and 302,505.60

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Solution

The fourth proportional to 326,125.20, 489,187.80 and 302,505.60 is: 453,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,125.20 : 489,187.80 = 302,505.60 : x
  2. Step 2: Convert to fraction form
    326,125.20/489,187.80 = 302,505.60/x
  3. Step 3: Cross multiply
    326,125.20x = 489,187.80 × 302,505.60
  4. Step 4: Simplify right side
    326,125.20x = 147,982,048,951.68
  5. Step 5: Solve for x
    x = 147,982,048,951.68/326,125.20
  6. Step 6: Final answer
    x = 453,758.40

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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.