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Finding the Fourth Proportional to 320,601.90, 480,999.12 and 95,969.64

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Solution

The fourth proportional to 320,601.90, 480,999.12 and 95,969.64 is: 143,983.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,601.90 : 480,999.12 = 95,969.64 : x
  2. Step 2: Convert to fraction form
    320,601.90/480,999.12 = 95,969.64/x
  3. Step 3: Cross multiply
    320,601.90x = 480,999.12 × 95,969.64
  4. Step 4: Simplify right side
    320,601.90x = 46,161,312,386.72
  5. Step 5: Solve for x
    x = 46,161,312,386.72/320,601.90
  6. Step 6: Final answer
    x = 143,983.28

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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.