Home / 257,380,697.35-385,747,918.82-139,200,747.26

Finding the Fourth Proportional to 257,380,697.35, 385,747,918.82 and 139,200,747.26

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Solution

The fourth proportional to 257,380,697.35, 385,747,918.82 and 139,200,747.26 is: 208,626,362.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,380,697.35 : 385,747,918.82 = 139,200,747.26 : x
  2. Step 2: Convert to fraction form
    257,380,697.35/385,747,918.82 = 139,200,747.26/x
  3. Step 3: Cross multiply
    257,380,697.35x = 385,747,918.82 × 139,200,747.26
  4. Step 4: Simplify right side
    257,380,697.35x = 53,696,398,551,109,072
  5. Step 5: Solve for x
    x = 53,696,398,551,109,072/257,380,697.35
  6. Step 6: Final answer
    x = 208,626,362.06

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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.