Home / 387,738.36-535,063.32-217,968.84

Finding the Fourth Proportional to 387,738.36, 535,063.32 and 217,968.84

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Solution

The fourth proportional to 387,738.36, 535,063.32 and 217,968.84 is: 300,788.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,738.36 : 535,063.32 = 217,968.84 : x
  2. Step 2: Convert to fraction form
    387,738.36/535,063.32 = 217,968.84/x
  3. Step 3: Cross multiply
    387,738.36x = 535,063.32 × 217,968.84
  4. Step 4: Simplify right side
    387,738.36x = 116,627,131,186.95
  5. Step 5: Solve for x
    x = 116,627,131,186.95/387,738.36
  6. Step 6: Final answer
    x = 300,788.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.