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Finding the Fourth Proportional to 387,145.88, 582,992.74 and 337,814.48

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Solution

The fourth proportional to 387,145.88, 582,992.74 and 337,814.48 is: 508,705.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,145.88 : 582,992.74 = 337,814.48 : x
  2. Step 2: Convert to fraction form
    387,145.88/582,992.74 = 337,814.48/x
  3. Step 3: Cross multiply
    387,145.88x = 582,992.74 × 337,814.48
  4. Step 4: Simplify right side
    387,145.88x = 196,943,389,306.88
  5. Step 5: Solve for x
    x = 196,943,389,306.88/387,145.88
  6. Step 6: Final answer
    x = 508,705.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.