Home / 258,672,272.31-387,864,853.70-86,054,855.49

Finding the Fourth Proportional to 258,672,272.31, 387,864,853.70 and 86,054,855.49

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Solution

The fourth proportional to 258,672,272.31, 387,864,853.70 and 86,054,855.49 is: 129,034,525.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,672,272.31 : 387,864,853.70 = 86,054,855.49 : x
  2. Step 2: Convert to fraction form
    258,672,272.31/387,864,853.70 = 86,054,855.49/x
  3. Step 3: Cross multiply
    258,672,272.31x = 387,864,853.70 × 86,054,855.49
  4. Step 4: Simplify right side
    258,672,272.31x = 33,377,653,934,373,216
  5. Step 5: Solve for x
    x = 33,377,653,934,373,216/258,672,272.31
  6. Step 6: Final answer
    x = 129,034,525.57

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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.