Home / 307,756.46-424,895.93-198,917.78

Finding the Fourth Proportional to 307,756.46, 424,895.93 and 198,917.78

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Solution

The fourth proportional to 307,756.46, 424,895.93 and 198,917.78 is: 274,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,756.46 : 424,895.93 = 198,917.78 : x
  2. Step 2: Convert to fraction form
    307,756.46/424,895.93 = 198,917.78/x
  3. Step 3: Cross multiply
    307,756.46x = 424,895.93 × 198,917.78
  4. Step 4: Simplify right side
    307,756.46x = 84,519,352,753.51
  5. Step 5: Solve for x
    x = 84,519,352,753.51/307,756.46
  6. Step 6: Final answer
    x = 274,630.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.