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Finding the Fourth Proportional to 403,080.80, 605,204.40 and 303,936.80

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Solution

The fourth proportional to 403,080.80, 605,204.40 and 303,936.80 is: 456,344.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,080.80 : 605,204.40 = 303,936.80 : x
  2. Step 2: Convert to fraction form
    403,080.80/605,204.40 = 303,936.80/x
  3. Step 3: Cross multiply
    403,080.80x = 605,204.40 × 303,936.80
  4. Step 4: Simplify right side
    403,080.80x = 183,943,888,681.92
  5. Step 5: Solve for x
    x = 183,943,888,681.92/403,080.80
  6. Step 6: Final answer
    x = 456,344.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.