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Finding the Fourth Proportional to 320,069.25, 480,128.64 and 95,412.51

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Solution

The fourth proportional to 320,069.25, 480,128.64 and 95,412.51 is: 143,126.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,069.25 : 480,128.64 = 95,412.51 : x
  2. Step 2: Convert to fraction form
    320,069.25/480,128.64 = 95,412.51/x
  3. Step 3: Cross multiply
    320,069.25x = 480,128.64 × 95,412.51
  4. Step 4: Simplify right side
    320,069.25x = 45,810,278,665.29
  5. Step 5: Solve for x
    x = 45,810,278,665.29/320,069.25
  6. Step 6: Final answer
    x = 143,126.15

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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.