Home / 396,263,239.69-546,849,856.80-217,663,642.15

Finding the Fourth Proportional to 396,263,239.69, 546,849,856.80 and 217,663,642.15

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Solution

The fourth proportional to 396,263,239.69, 546,849,856.80 and 217,663,642.15 is: 300,379,443.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,263,239.69 : 546,849,856.80 = 217,663,642.15 : x
  2. Step 2: Convert to fraction form
    396,263,239.69/546,849,856.80 = 217,663,642.15/x
  3. Step 3: Cross multiply
    396,263,239.69x = 546,849,856.80 × 217,663,642.15
  4. Step 4: Simplify right side
    396,263,239.69x = 119,029,331,540,293,936
  5. Step 5: Solve for x
    x = 119,029,331,540,293,936/396,263,239.69
  6. Step 6: Final answer
    x = 300,379,443.81

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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.