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Finding the Fourth Proportional to 387,887.96, 535,274.64 and 235,016.68

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Solution

The fourth proportional to 387,887.96, 535,274.64 and 235,016.68 is: 324,316.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,887.96 : 535,274.64 = 235,016.68 : x
  2. Step 2: Convert to fraction form
    387,887.96/535,274.64 = 235,016.68/x
  3. Step 3: Cross multiply
    387,887.96x = 535,274.64 × 235,016.68
  4. Step 4: Simplify right side
    387,887.96x = 125,798,468,781.00
  5. Step 5: Solve for x
    x = 125,798,468,781.00/387,887.96
  6. Step 6: Final answer
    x = 324,316.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.