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Finding the Fourth Proportional to 538,019.40, 806,942.70 and 163,955.40

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Solution

The fourth proportional to 538,019.40, 806,942.70 and 163,955.40 is: 245,906.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,019.40 : 806,942.70 = 163,955.40 : x
  2. Step 2: Convert to fraction form
    538,019.40/806,942.70 = 163,955.40/x
  3. Step 3: Cross multiply
    538,019.40x = 806,942.70 × 163,955.40
  4. Step 4: Simplify right side
    538,019.40x = 132,302,613,155.58
  5. Step 5: Solve for x
    x = 132,302,613,155.58/538,019.40
  6. Step 6: Final answer
    x = 245,906.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.