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Finding the Fourth Proportional to 387,409.39, 534,668.33 and 234,531.88

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Solution

The fourth proportional to 387,409.39, 534,668.33 and 234,531.88 is: 323,680.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,409.39 : 534,668.33 = 234,531.88 : x
  2. Step 2: Convert to fraction form
    387,409.39/534,668.33 = 234,531.88/x
  3. Step 3: Cross multiply
    387,409.39x = 534,668.33 × 234,531.88
  4. Step 4: Simplify right side
    387,409.39x = 125,396,768,611.36
  5. Step 5: Solve for x
    x = 125,396,768,611.36/387,409.39
  6. Step 6: Final answer
    x = 323,680.25

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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.