Home / 258,601,110.72-387,892,218.12-76,843,564.80

Finding the Fourth Proportional to 258,601,110.72, 387,892,218.12 and 76,843,564.80

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Solution

The fourth proportional to 258,601,110.72, 387,892,218.12 and 76,843,564.80 is: 115,262,539.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,601,110.72 : 387,892,218.12 = 76,843,564.80 : x
  2. Step 2: Convert to fraction form
    258,601,110.72/387,892,218.12 = 76,843,564.80/x
  3. Step 3: Cross multiply
    258,601,110.72x = 387,892,218.12 × 76,843,564.80
  4. Step 4: Simplify right side
    258,601,110.72x = 29,807,020,798,519,952
  5. Step 5: Solve for x
    x = 29,807,020,798,519,952/258,601,110.72
  6. Step 6: Final answer
    x = 115,262,539.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.