Home / 320,415.03-480,655.41-120,903.30

Finding the Fourth Proportional to 320,415.03, 480,655.41 and 120,903.30

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Solution

The fourth proportional to 320,415.03, 480,655.41 and 120,903.30 is: 181,367.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,415.03 : 480,655.41 = 120,903.30 : x
  2. Step 2: Convert to fraction form
    320,415.03/480,655.41 = 120,903.30/x
  3. Step 3: Cross multiply
    320,415.03x = 480,655.41 × 120,903.30
  4. Step 4: Simplify right side
    320,415.03x = 58,112,825,231.85
  5. Step 5: Solve for x
    x = 58,112,825,231.85/320,415.03
  6. Step 6: Final answer
    x = 181,367.35

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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.