Home / 215,465.28-324,494.40-190,815.36

Finding the Fourth Proportional to 215,465.28, 324,494.40 and 190,815.36

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Solution

The fourth proportional to 215,465.28, 324,494.40 and 190,815.36 is: 287,371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,465.28 : 324,494.40 = 190,815.36 : x
  2. Step 2: Convert to fraction form
    215,465.28/324,494.40 = 190,815.36/x
  3. Step 3: Cross multiply
    215,465.28x = 324,494.40 × 190,815.36
  4. Step 4: Simplify right side
    215,465.28x = 61,918,515,753.98
  5. Step 5: Solve for x
    x = 61,918,515,753.98/215,465.28
  6. Step 6: Final answer
    x = 287,371.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.