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Finding the Fourth Proportional to 492,231.78, 679,279.84 and 265,877.28

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Solution

The fourth proportional to 492,231.78, 679,279.84 and 265,877.28 is: 366,910.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,231.78 : 679,279.84 = 265,877.28 : x
  2. Step 2: Convert to fraction form
    492,231.78/679,279.84 = 265,877.28/x
  3. Step 3: Cross multiply
    492,231.78x = 679,279.84 × 265,877.28
  4. Step 4: Simplify right side
    492,231.78x = 180,605,076,218.04
  5. Step 5: Solve for x
    x = 180,605,076,218.04/492,231.78
  6. Step 6: Final answer
    x = 366,910.64

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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.