Home / 379,531.35-523,786.59-209,798.28

Finding the Fourth Proportional to 379,531.35, 523,786.59 and 209,798.28

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Solution

The fourth proportional to 379,531.35, 523,786.59 and 209,798.28 is: 289,540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,531.35 : 523,786.59 = 209,798.28 : x
  2. Step 2: Convert to fraction form
    379,531.35/523,786.59 = 209,798.28/x
  3. Step 3: Cross multiply
    379,531.35x = 523,786.59 × 209,798.28
  4. Step 4: Simplify right side
    379,531.35x = 109,889,525,669.07
  5. Step 5: Solve for x
    x = 109,889,525,669.07/379,531.35
  6. Step 6: Final answer
    x = 289,540.05

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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.