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Finding the Fourth Proportional to 275,364.80, 412,528.80 and 141,790.40

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Solution

The fourth proportional to 275,364.80, 412,528.80 and 141,790.40 is: 212,418.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,364.80 : 412,528.80 = 141,790.40 : x
  2. Step 2: Convert to fraction form
    275,364.80/412,528.80 = 141,790.40/x
  3. Step 3: Cross multiply
    275,364.80x = 412,528.80 × 141,790.40
  4. Step 4: Simplify right side
    275,364.80x = 58,492,623,563.52
  5. Step 5: Solve for x
    x = 58,492,623,563.52/275,364.80
  6. Step 6: Final answer
    x = 212,418.67

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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.