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Finding the Fourth Proportional to 235,060.88, 324,412.70 and 138,260.12

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Solution

The fourth proportional to 235,060.88, 324,412.70 and 138,260.12 is: 190,815.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,060.88 : 324,412.70 = 138,260.12 : x
  2. Step 2: Convert to fraction form
    235,060.88/324,412.70 = 138,260.12/x
  3. Step 3: Cross multiply
    235,060.88x = 324,412.70 × 138,260.12
  4. Step 4: Simplify right side
    235,060.88x = 44,853,338,831.52
  5. Step 5: Solve for x
    x = 44,853,338,831.52/235,060.88
  6. Step 6: Final answer
    x = 190,815.84

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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.