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Finding the Fourth Proportional to 256,574.82, 354,072.69 and 143,397.57

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Solution

The fourth proportional to 256,574.82, 354,072.69 and 143,397.57 is: 197,888.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,574.82 : 354,072.69 = 143,397.57 : x
  2. Step 2: Convert to fraction form
    256,574.82/354,072.69 = 143,397.57/x
  3. Step 3: Cross multiply
    256,574.82x = 354,072.69 × 143,397.57
  4. Step 4: Simplify right side
    256,574.82x = 50,773,163,349.36
  5. Step 5: Solve for x
    x = 50,773,163,349.36/256,574.82
  6. Step 6: Final answer
    x = 197,888.33

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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.