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Finding the Fourth Proportional to 328,216, 489,747.84 and 308,153.92

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Solution

The fourth proportional to 328,216, 489,747.84 and 308,153.92 is: 459,812.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,216 : 489,747.84 = 308,153.92 : x
  2. Step 2: Convert to fraction form
    328,216/489,747.84 = 308,153.92/x
  3. Step 3: Cross multiply
    328,216x = 489,747.84 × 308,153.92
  4. Step 4: Simplify right side
    328,216x = 150,917,716,707.53
  5. Step 5: Solve for x
    x = 150,917,716,707.53/328,216
  6. Step 6: Final answer
    x = 459,812.19

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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.