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Finding the Fourth Proportional to 308,803.95, 426,052.33 and 172,816.29

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Solution

The fourth proportional to 308,803.95, 426,052.33 and 172,816.29 is: 238,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,803.95 : 426,052.33 = 172,816.29 : x
  2. Step 2: Convert to fraction form
    308,803.95/426,052.33 = 172,816.29/x
  3. Step 3: Cross multiply
    308,803.95x = 426,052.33 × 172,816.29
  4. Step 4: Simplify right side
    308,803.95x = 73,628,782,584.42
  5. Step 5: Solve for x
    x = 73,628,782,584.42/308,803.95
  6. Step 6: Final answer
    x = 238,432.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.