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Finding the Fourth Proportional to 395,316.54, 545,536.02 and 214,028.57

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Solution

The fourth proportional to 395,316.54, 545,536.02 and 214,028.57 is: 295,358.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,316.54 : 545,536.02 = 214,028.57 : x
  2. Step 2: Convert to fraction form
    395,316.54/545,536.02 = 214,028.57/x
  3. Step 3: Cross multiply
    395,316.54x = 545,536.02 × 214,028.57
  4. Step 4: Simplify right side
    395,316.54x = 116,760,291,516.41
  5. Step 5: Solve for x
    x = 116,760,291,516.41/395,316.54
  6. Step 6: Final answer
    x = 295,358.98

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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.