Home / 258,660,583.65-387,987,221.69-120,408,864.71

Finding the Fourth Proportional to 258,660,583.65, 387,987,221.69 and 120,408,864.71

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Solution

The fourth proportional to 258,660,583.65, 387,987,221.69 and 120,408,864.71 is: 180,611,596.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,660,583.65 : 387,987,221.69 = 120,408,864.71 : x
  2. Step 2: Convert to fraction form
    258,660,583.65/387,987,221.69 = 120,408,864.71/x
  3. Step 3: Cross multiply
    258,660,583.65x = 387,987,221.69 × 120,408,864.71
  4. Step 4: Simplify right side
    258,660,583.65x = 46,717,100,883,138,008
  5. Step 5: Solve for x
    x = 46,717,100,883,138,008/258,660,583.65
  6. Step 6: Final answer
    x = 180,611,596.18

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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.