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Finding the Fourth Proportional to 275,792.28, 380,637.64 and 257,782.33

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Solution

The fourth proportional to 275,792.28, 380,637.64 and 257,782.33 is: 355,781.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,792.28 : 380,637.64 = 257,782.33 : x
  2. Step 2: Convert to fraction form
    275,792.28/380,637.64 = 257,782.33/x
  3. Step 3: Cross multiply
    275,792.28x = 380,637.64 × 257,782.33
  4. Step 4: Simplify right side
    275,792.28x = 98,121,657,724.90
  5. Step 5: Solve for x
    x = 98,121,657,724.90/275,792.28
  6. Step 6: Final answer
    x = 355,781.02

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1.5x scale

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.