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Finding the Fourth Proportional to 328,217, 489,749.33 and 308,154.92

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Solution

The fourth proportional to 328,217, 489,749.33 and 308,154.92 is: 459,813.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,217 : 489,749.33 = 308,154.92 : x
  2. Step 2: Convert to fraction form
    328,217/489,749.33 = 308,154.92/x
  3. Step 3: Cross multiply
    328,217x = 489,749.33 × 308,154.92
  4. Step 4: Simplify right side
    328,217x = 150,918,665,606.20
  5. Step 5: Solve for x
    x = 150,918,665,606.20/328,217
  6. Step 6: Final answer
    x = 459,813.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.