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Finding the Fourth Proportional to 197,914, 273,122.28 and 118,426

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Solution

The fourth proportional to 197,914, 273,122.28 and 118,426 is: 163,428.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,914 : 273,122.28 = 118,426 : x
  2. Step 2: Convert to fraction form
    197,914/273,122.28 = 118,426/x
  3. Step 3: Cross multiply
    197,914x = 273,122.28 × 118,426
  4. Step 4: Simplify right side
    197,914x = 32,344,779,131.28
  5. Step 5: Solve for x
    x = 32,344,779,131.28/197,914
  6. Step 6: Final answer
    x = 163,428.45

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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.