Home / 317,621.44-476,429.28-140,128.60

Finding the Fourth Proportional to 317,621.44, 476,429.28 and 140,128.60

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Solution

The fourth proportional to 317,621.44, 476,429.28 and 140,128.60 is: 210,191.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,621.44 : 476,429.28 = 140,128.60 : x
  2. Step 2: Convert to fraction form
    317,621.44/476,429.28 = 140,128.60/x
  3. Step 3: Cross multiply
    317,621.44x = 476,429.28 × 140,128.60
  4. Step 4: Simplify right side
    317,621.44x = 66,761,368,005.41
  5. Step 5: Solve for x
    x = 66,761,368,005.41/317,621.44
  6. Step 6: Final answer
    x = 210,191.63

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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.