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Finding the Fourth Proportional to 256,574.60, 354,072.06 and 143,397.35

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Solution

The fourth proportional to 256,574.60, 354,072.06 and 143,397.35 is: 197,887.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,574.60 : 354,072.06 = 143,397.35 : x
  2. Step 2: Convert to fraction form
    256,574.60/354,072.06 = 143,397.35/x
  3. Step 3: Cross multiply
    256,574.60x = 354,072.06 × 143,397.35
  4. Step 4: Simplify right side
    256,574.60x = 50,772,996,535.96
  5. Step 5: Solve for x
    x = 50,772,996,535.96/256,574.60
  6. Step 6: Final answer
    x = 197,887.85

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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.