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Finding the Fourth Proportional to 392,356.07, 541,614.09 and 265,203.89

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Solution

The fourth proportional to 392,356.07, 541,614.09 and 265,203.89 is: 366,091.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,356.07 : 541,614.09 = 265,203.89 : x
  2. Step 2: Convert to fraction form
    392,356.07/541,614.09 = 265,203.89/x
  3. Step 3: Cross multiply
    392,356.07x = 541,614.09 × 265,203.89
  4. Step 4: Simplify right side
    392,356.07x = 143,638,160,838.74
  5. Step 5: Solve for x
    x = 143,638,160,838.74/392,356.07
  6. Step 6: Final answer
    x = 366,091.35

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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.