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Finding the Fourth Proportional to 403,352.20, 605,028.30 and 383,669.20

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Solution

The fourth proportional to 403,352.20, 605,028.30 and 383,669.20 is: 575,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,352.20 : 605,028.30 = 383,669.20 : x
  2. Step 2: Convert to fraction form
    403,352.20/605,028.30 = 383,669.20/x
  3. Step 3: Cross multiply
    403,352.20x = 605,028.30 × 383,669.20
  4. Step 4: Simplify right side
    403,352.20x = 232,130,723,838.36
  5. Step 5: Solve for x
    x = 232,130,723,838.36/403,352.20
  6. Step 6: Final answer
    x = 575,503.80

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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.