Home / 210,228.42-290,431.44-137,803.32

Finding the Fourth Proportional to 210,228.42, 290,431.44 and 137,803.32

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Solution

The fourth proportional to 210,228.42, 290,431.44 and 137,803.32 is: 190,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,228.42 : 290,431.44 = 137,803.32 : x
  2. Step 2: Convert to fraction form
    210,228.42/290,431.44 = 137,803.32/x
  3. Step 3: Cross multiply
    210,228.42x = 290,431.44 × 137,803.32
  4. Step 4: Simplify right side
    210,228.42x = 40,022,416,664.38
  5. Step 5: Solve for x
    x = 40,022,416,664.38/210,228.42
  6. Step 6: Final answer
    x = 190,375.86

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1.5x scale

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.