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Finding the Fourth Proportional to 392,062.49, 540,846.75 and 256,175.88

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Solution

The fourth proportional to 392,062.49, 540,846.75 and 256,175.88 is: 353,392.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,062.49 : 540,846.75 = 256,175.88 : x
  2. Step 2: Convert to fraction form
    392,062.49/540,846.75 = 256,175.88/x
  3. Step 3: Cross multiply
    392,062.49x = 540,846.75 × 256,175.88
  4. Step 4: Simplify right side
    392,062.49x = 138,551,892,126.39
  5. Step 5: Solve for x
    x = 138,551,892,126.39/392,062.49
  6. Step 6: Final answer
    x = 353,392.37

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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.