Home / 396,128.61-546,655.91-214,839.81

Finding the Fourth Proportional to 396,128.61, 546,655.91 and 214,839.81

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Solution

The fourth proportional to 396,128.61, 546,655.91 and 214,839.81 is: 296,478.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,128.61 : 546,655.91 = 214,839.81 : x
  2. Step 2: Convert to fraction form
    396,128.61/546,655.91 = 214,839.81/x
  3. Step 3: Cross multiply
    396,128.61x = 546,655.91 × 214,839.81
  4. Step 4: Simplify right side
    396,128.61x = 117,443,450,765.58
  5. Step 5: Solve for x
    x = 117,443,450,765.58/396,128.61
  6. Step 6: Final answer
    x = 296,478.08

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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.