Home / 379,721.97-523,769.43-243,540.23

Finding the Fourth Proportional to 379,721.97, 523,769.43 and 243,540.23

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Solution

The fourth proportional to 379,721.97, 523,769.43 and 243,540.23 is: 335,927.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,721.97 : 523,769.43 = 243,540.23 : x
  2. Step 2: Convert to fraction form
    379,721.97/523,769.43 = 243,540.23/x
  3. Step 3: Cross multiply
    379,721.97x = 523,769.43 × 243,540.23
  4. Step 4: Simplify right side
    379,721.97x = 127,558,924,830.32
  5. Step 5: Solve for x
    x = 127,558,924,830.32/379,721.97
  6. Step 6: Final answer
    x = 335,927.16

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1.5x scale

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.