Home / 320,629.72-480,930.40-83,967.16

Finding the Fourth Proportional to 320,629.72, 480,930.40 and 83,967.16

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Solution

The fourth proportional to 320,629.72, 480,930.40 and 83,967.16 is: 125,947.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,629.72 : 480,930.40 = 83,967.16 : x
  2. Step 2: Convert to fraction form
    320,629.72/480,930.40 = 83,967.16/x
  3. Step 3: Cross multiply
    320,629.72x = 480,930.40 × 83,967.16
  4. Step 4: Simplify right side
    320,629.72x = 40,382,359,845.66
  5. Step 5: Solve for x
    x = 40,382,359,845.66/320,629.72
  6. Step 6: Final answer
    x = 125,947.03

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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.