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Finding the Fourth Proportional to 275,009.79, 412,515.05 and 75,331.94

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Solution

The fourth proportional to 275,009.79, 412,515.05 and 75,331.94 is: 112,998.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,009.79 : 412,515.05 = 75,331.94 : x
  2. Step 2: Convert to fraction form
    275,009.79/412,515.05 = 75,331.94/x
  3. Step 3: Cross multiply
    275,009.79x = 412,515.05 × 75,331.94
  4. Step 4: Simplify right side
    275,009.79x = 31,075,556,556.46
  5. Step 5: Solve for x
    x = 31,075,556,556.46/275,009.79
  6. Step 6: Final answer
    x = 112,998.00

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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.