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Finding the Fourth Proportional to 256,792.21, 354,383.69 and 142,068.87

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Solution

The fourth proportional to 256,792.21, 354,383.69 and 142,068.87 is: 196,060.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,792.21 : 354,383.69 = 142,068.87 : x
  2. Step 2: Convert to fraction form
    256,792.21/354,383.69 = 142,068.87/x
  3. Step 3: Cross multiply
    256,792.21x = 354,383.69 × 142,068.87
  4. Step 4: Simplify right side
    256,792.21x = 50,346,889,674.39
  5. Step 5: Solve for x
    x = 50,346,889,674.39/256,792.21
  6. Step 6: Final answer
    x = 196,060.82

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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.