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Finding the Fourth Proportional to 215,576, 297,494.88 and 126,152

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Solution

The fourth proportional to 215,576, 297,494.88 and 126,152 is: 174,089.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,576 : 297,494.88 = 126,152 : x
  2. Step 2: Convert to fraction form
    215,576/297,494.88 = 126,152/x
  3. Step 3: Cross multiply
    215,576x = 297,494.88 × 126,152
  4. Step 4: Simplify right side
    215,576x = 37,529,574,101.76
  5. Step 5: Solve for x
    x = 37,529,574,101.76/215,576
  6. Step 6: Final answer
    x = 174,089.76

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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.