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Finding the Fourth Proportional to 229,030.88, 316,065.92 and 138,374.24

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Solution

The fourth proportional to 229,030.88, 316,065.92 and 138,374.24 is: 190,958.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,030.88 : 316,065.92 = 138,374.24 : x
  2. Step 2: Convert to fraction form
    229,030.88/316,065.92 = 138,374.24/x
  3. Step 3: Cross multiply
    229,030.88x = 316,065.92 × 138,374.24
  4. Step 4: Simplify right side
    229,030.88x = 43,735,381,469.90
  5. Step 5: Solve for x
    x = 43,735,381,469.90/229,030.88
  6. Step 6: Final answer
    x = 190,958.45

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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.