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Finding the Fourth Proportional to 229,308.97, 316,475.52 and 138,665.56

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Solution

The fourth proportional to 229,308.97, 316,475.52 and 138,665.56 is: 191,376.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,308.97 : 316,475.52 = 138,665.56 : x
  2. Step 2: Convert to fraction form
    229,308.97/316,475.52 = 138,665.56/x
  3. Step 3: Cross multiply
    229,308.97x = 316,475.52 × 138,665.56
  4. Step 4: Simplify right side
    229,308.97x = 43,884,255,207.09
  5. Step 5: Solve for x
    x = 43,884,255,207.09/229,308.97
  6. Step 6: Final answer
    x = 191,376.09

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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.