Home / 394,533.24-543,816.12-308,340

Finding the Fourth Proportional to 394,533.24, 543,816.12 and 308,340

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Solution

The fourth proportional to 394,533.24, 543,816.12 and 308,340 is: 425,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,533.24 : 543,816.12 = 308,340 : x
  2. Step 2: Convert to fraction form
    394,533.24/543,816.12 = 308,340/x
  3. Step 3: Cross multiply
    394,533.24x = 543,816.12 × 308,340
  4. Step 4: Simplify right side
    394,533.24x = 167,680,262,440.80
  5. Step 5: Solve for x
    x = 167,680,262,440.80/394,533.24
  6. Step 6: Final answer
    x = 425,009.21

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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.