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Finding the Fourth Proportional to 197,467, 272,502.66 and 111,426.58

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Solution

The fourth proportional to 197,467, 272,502.66 and 111,426.58 is: 153,767.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,467 : 272,502.66 = 111,426.58 : x
  2. Step 2: Convert to fraction form
    197,467/272,502.66 = 111,426.58/x
  3. Step 3: Cross multiply
    197,467x = 272,502.66 × 111,426.58
  4. Step 4: Simplify right side
    197,467x = 30,364,039,444.70
  5. Step 5: Solve for x
    x = 30,364,039,444.70/197,467
  6. Step 6: Final answer
    x = 153,767.66

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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.