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Finding the Fourth Proportional to 238,615.92, 329,317.92 and 138,013.92

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Solution

The fourth proportional to 238,615.92, 329,317.92 and 138,013.92 is: 190,475.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,615.92 : 329,317.92 = 138,013.92 : x
  2. Step 2: Convert to fraction form
    238,615.92/329,317.92 = 138,013.92/x
  3. Step 3: Cross multiply
    238,615.92x = 329,317.92 × 138,013.92
  4. Step 4: Simplify right side
    238,615.92x = 45,450,457,065.45
  5. Step 5: Solve for x
    x = 45,450,457,065.45/238,615.92
  6. Step 6: Final answer
    x = 190,475.38

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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.