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Finding the Fourth Proportional to 387,137.88, 582,980.69 and 337,806.45

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Solution

The fourth proportional to 387,137.88, 582,980.69 and 337,806.45 is: 508,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,137.88 : 582,980.69 = 337,806.45 : x
  2. Step 2: Convert to fraction form
    387,137.88/582,980.69 = 337,806.45/x
  3. Step 3: Cross multiply
    387,137.88x = 582,980.69 × 337,806.45
  4. Step 4: Simplify right side
    387,137.88x = 196,934,638,151.97
  5. Step 5: Solve for x
    x = 196,934,638,151.97/387,137.88
  6. Step 6: Final answer
    x = 508,693.80

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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.