Home / 394,981.75-545,075.18-216,133.75

Finding the Fourth Proportional to 394,981.75, 545,075.18 and 216,133.75

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Solution

The fourth proportional to 394,981.75, 545,075.18 and 216,133.75 is: 298,264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,981.75 : 545,075.18 = 216,133.75 : x
  2. Step 2: Convert to fraction form
    394,981.75/545,075.18 = 216,133.75/x
  3. Step 3: Cross multiply
    394,981.75x = 545,075.18 × 216,133.75
  4. Step 4: Simplify right side
    394,981.75x = 117,809,142,685.33
  5. Step 5: Solve for x
    x = 117,809,142,685.33/394,981.75
  6. Step 6: Final answer
    x = 298,264.77

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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.