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Finding the Fourth Proportional to 316,620.36, 436,936.74 and 171,427.64

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Solution

The fourth proportional to 316,620.36, 436,936.74 and 171,427.64 is: 236,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,620.36 : 436,936.74 = 171,427.64 : x
  2. Step 2: Convert to fraction form
    316,620.36/436,936.74 = 171,427.64/x
  3. Step 3: Cross multiply
    316,620.36x = 436,936.74 × 171,427.64
  4. Step 4: Simplify right side
    316,620.36x = 74,903,034,167.49
  5. Step 5: Solve for x
    x = 74,903,034,167.49/316,620.36
  6. Step 6: Final answer
    x = 236,570.49

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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.