Home / 258,672,269.78-387,864,849.96-86,054,852.96

Finding the Fourth Proportional to 258,672,269.78, 387,864,849.96 and 86,054,852.96

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Solution

The fourth proportional to 258,672,269.78, 387,864,849.96 and 86,054,852.96 is: 129,034,521.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,672,269.78 : 387,864,849.96 = 86,054,852.96 : x
  2. Step 2: Convert to fraction form
    258,672,269.78/387,864,849.96 = 86,054,852.96/x
  3. Step 3: Cross multiply
    258,672,269.78x = 387,864,849.96 × 86,054,852.96
  4. Step 4: Simplify right side
    258,672,269.78x = 33,377,652,631,660,256
  5. Step 5: Solve for x
    x = 33,377,652,631,660,256/258,672,269.78
  6. Step 6: Final answer
    x = 129,034,521.79

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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.