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Finding the Fourth Proportional to 525,878.77, 789,173.07 and 205,990.94

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Solution

The fourth proportional to 525,878.77, 789,173.07 and 205,990.94 is: 309,125.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,878.77 : 789,173.07 = 205,990.94 : x
  2. Step 2: Convert to fraction form
    525,878.77/789,173.07 = 205,990.94/x
  3. Step 3: Cross multiply
    525,878.77x = 789,173.07 × 205,990.94
  4. Step 4: Simplify right side
    525,878.77x = 162,562,502,511.99
  5. Step 5: Solve for x
    x = 162,562,502,511.99/525,878.77
  6. Step 6: Final answer
    x = 309,125.44

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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.