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Finding the Fourth Proportional to 403,476.80, 605,215.20 and 366,735.20

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Solution

The fourth proportional to 403,476.80, 605,215.20 and 366,735.20 is: 550,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,476.80 : 605,215.20 = 366,735.20 : x
  2. Step 2: Convert to fraction form
    403,476.80/605,215.20 = 366,735.20/x
  3. Step 3: Cross multiply
    403,476.80x = 605,215.20 × 366,735.20
  4. Step 4: Simplify right side
    403,476.80x = 221,953,717,415.04
  5. Step 5: Solve for x
    x = 221,953,717,415.04/403,476.80
  6. Step 6: Final answer
    x = 550,102.80

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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.