Home / 459,359.85-689,131.75-257,243.38

Finding the Fourth Proportional to 459,359.85, 689,131.75 and 257,243.38

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Solution

The fourth proportional to 459,359.85, 689,131.75 and 257,243.38 is: 385,916.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,359.85 : 689,131.75 = 257,243.38 : x
  2. Step 2: Convert to fraction form
    459,359.85/689,131.75 = 257,243.38/x
  3. Step 3: Cross multiply
    459,359.85x = 689,131.75 × 257,243.38
  4. Step 4: Simplify right side
    459,359.85x = 177,274,583,351.57
  5. Step 5: Solve for x
    x = 177,274,583,351.57/459,359.85
  6. Step 6: Final answer
    x = 385,916.58

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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.