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Finding the Fourth Proportional to 316,434.36, 436,676.06 and 171,236.94

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Solution

The fourth proportional to 316,434.36, 436,676.06 and 171,236.94 is: 236,305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,434.36 : 436,676.06 = 171,236.94 : x
  2. Step 2: Convert to fraction form
    316,434.36/436,676.06 = 171,236.94/x
  3. Step 3: Cross multiply
    316,434.36x = 436,676.06 × 171,236.94
  4. Step 4: Simplify right side
    316,434.36x = 74,775,071,429.47
  5. Step 5: Solve for x
    x = 74,775,071,429.47/316,434.36
  6. Step 6: Final answer
    x = 236,305.16

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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.