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Finding the Fourth Proportional to 482,997.58, 666,567.53 and 279,085.80

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Solution

The fourth proportional to 482,997.58, 666,567.53 and 279,085.80 is: 385,156.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,997.58 : 666,567.53 = 279,085.80 : x
  2. Step 2: Convert to fraction form
    482,997.58/666,567.53 = 279,085.80/x
  3. Step 3: Cross multiply
    482,997.58x = 666,567.53 × 279,085.80
  4. Step 4: Simplify right side
    482,997.58x = 186,029,534,514.85
  5. Step 5: Solve for x
    x = 186,029,534,514.85/482,997.58
  6. Step 6: Final answer
    x = 385,156.24

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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.