Home / 210,299.09-315,490.55-68,180.54

Finding the Fourth Proportional to 210,299.09, 315,490.55 and 68,180.54

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Solution

The fourth proportional to 210,299.09, 315,490.55 and 68,180.54 is: 102,284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,299.09 : 315,490.55 = 68,180.54 : x
  2. Step 2: Convert to fraction form
    210,299.09/315,490.55 = 68,180.54/x
  3. Step 3: Cross multiply
    210,299.09x = 315,490.55 × 68,180.54
  4. Step 4: Simplify right side
    210,299.09x = 21,510,314,145.54
  5. Step 5: Solve for x
    x = 21,510,314,145.54/210,299.09
  6. Step 6: Final answer
    x = 102,284.39

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1.5x scale

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.