Home / 391,952,885,391.22-540,823,178,379.55-218,333,704,196.78

Finding the Fourth Proportional to 391,952,885,391.22, 540,823,178,379.55 and 218,333,704,196.78

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Solution

The fourth proportional to 391,952,885,391.22, 540,823,178,379.55 and 218,333,704,196.78 is: 301,260,514,342.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,952,885,391.22 : 540,823,178,379.55 = 218,333,704,196.78 : x
  2. Step 2: Convert to fraction form
    391,952,885,391.22/540,823,178,379.55 = 218,333,704,196.78/x
  3. Step 3: Cross multiply
    391,952,885,391.22x = 540,823,178,379.55 × 218,333,704,196.78
  4. Step 4: Simplify right side
    391,952,885,391.22x = 118,079,927,851,083,045,535,744
  5. Step 5: Solve for x
    x = 118,079,927,851,083,045,535,744/391,952,885,391.22
  6. Step 6: Final answer
    x = 301,260,514,342.75

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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.