Home / 260,141,906.88-390,212,657.28-78,389,087.04

Finding the Fourth Proportional to 260,141,906.88, 390,212,657.28 and 78,389,087.04

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Solution

The fourth proportional to 260,141,906.88, 390,212,657.28 and 78,389,087.04 is: 117,583,569.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,141,906.88 : 390,212,657.28 = 78,389,087.04 : x
  2. Step 2: Convert to fraction form
    260,141,906.88/390,212,657.28 = 78,389,087.04/x
  3. Step 3: Cross multiply
    260,141,906.88x = 390,212,657.28 × 78,389,087.04
  4. Step 4: Simplify right side
    260,141,906.88x = 30,588,413,955,631,608
  5. Step 5: Solve for x
    x = 30,588,413,955,631,608/260,141,906.88
  6. Step 6: Final answer
    x = 117,583,569.38

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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.