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Finding the Fourth Proportional to 387,893.45, 582,004.20 and 245,847.80

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Solution

The fourth proportional to 387,893.45, 582,004.20 and 245,847.80 is: 368,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,893.45 : 582,004.20 = 245,847.80 : x
  2. Step 2: Convert to fraction form
    387,893.45/582,004.20 = 245,847.80/x
  3. Step 3: Cross multiply
    387,893.45x = 582,004.20 × 245,847.80
  4. Step 4: Simplify right side
    387,893.45x = 143,084,452,160.76
  5. Step 5: Solve for x
    x = 143,084,452,160.76/387,893.45
  6. Step 6: Final answer
    x = 368,875.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.