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Finding the Fourth Proportional to 256,574.98, 354,072.58 and 143,397.73

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Solution

The fourth proportional to 256,574.98, 354,072.58 and 143,397.73 is: 197,888.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,574.98 : 354,072.58 = 143,397.73 : x
  2. Step 2: Convert to fraction form
    256,574.98/354,072.58 = 143,397.73/x
  3. Step 3: Cross multiply
    256,574.98x = 354,072.58 × 143,397.73
  4. Step 4: Simplify right side
    256,574.98x = 50,773,204,122.12
  5. Step 5: Solve for x
    x = 50,773,204,122.12/256,574.98
  6. Step 6: Final answer
    x = 197,888.37

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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.