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Finding the Fourth Proportional to 359,745.40, 539,575.12 and 279,863.10

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Solution

The fourth proportional to 359,745.40, 539,575.12 and 279,863.10 is: 419,761.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,745.40 : 539,575.12 = 279,863.10 : x
  2. Step 2: Convert to fraction form
    359,745.40/539,575.12 = 279,863.10/x
  3. Step 3: Cross multiply
    359,745.40x = 539,575.12 × 279,863.10
  4. Step 4: Simplify right side
    359,745.40x = 151,007,166,115.90
  5. Step 5: Solve for x
    x = 151,007,166,115.90/359,745.40
  6. Step 6: Final answer
    x = 419,761.21

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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.