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Finding the Fourth Proportional to 256,679.96, 354,219.08 and 143,502.71

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Solution

The fourth proportional to 256,679.96, 354,219.08 and 143,502.71 is: 198,034.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,679.96 : 354,219.08 = 143,502.71 : x
  2. Step 2: Convert to fraction form
    256,679.96/354,219.08 = 143,502.71/x
  3. Step 3: Cross multiply
    256,679.96x = 354,219.08 × 143,502.71
  4. Step 4: Simplify right side
    256,679.96x = 50,831,395,425.10
  5. Step 5: Solve for x
    x = 50,831,395,425.10/256,679.96
  6. Step 6: Final answer
    x = 198,034.14

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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.