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Finding the Fourth Proportional to 256,744.88, 354,300.40 and 142,028.08

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Solution

The fourth proportional to 256,744.88, 354,300.40 and 142,028.08 is: 195,994.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,744.88 : 354,300.40 = 142,028.08 : x
  2. Step 2: Convert to fraction form
    256,744.88/354,300.40 = 142,028.08/x
  3. Step 3: Cross multiply
    256,744.88x = 354,300.40 × 142,028.08
  4. Step 4: Simplify right side
    256,744.88x = 50,320,605,555.23
  5. Step 5: Solve for x
    x = 50,320,605,555.23/256,744.88
  6. Step 6: Final answer
    x = 195,994.58

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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.