Home / 205,420.10-308,648.55-130,576.10

Finding the Fourth Proportional to 205,420.10, 308,648.55 and 130,576.10

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Solution

The fourth proportional to 205,420.10, 308,648.55 and 130,576.10 is: 196,193.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,420.10 : 308,648.55 = 130,576.10 : x
  2. Step 2: Convert to fraction form
    205,420.10/308,648.55 = 130,576.10/x
  3. Step 3: Cross multiply
    205,420.10x = 308,648.55 × 130,576.10
  4. Step 4: Simplify right side
    205,420.10x = 40,302,123,929.66
  5. Step 5: Solve for x
    x = 40,302,123,929.66/205,420.10
  6. Step 6: Final answer
    x = 196,193.67

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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.