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Finding the Fourth Proportional to 266,834.37, 399,725.59 and 216,970.77

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Solution

The fourth proportional to 266,834.37, 399,725.59 and 216,970.77 is: 325,028.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,834.37 : 399,725.59 = 216,970.77 : x
  2. Step 2: Convert to fraction form
    266,834.37/399,725.59 = 216,970.77/x
  3. Step 3: Cross multiply
    266,834.37x = 399,725.59 × 216,970.77
  4. Step 4: Simplify right side
    266,834.37x = 86,728,769,051.00
  5. Step 5: Solve for x
    x = 86,728,769,051.00/266,834.37
  6. Step 6: Final answer
    x = 325,028.48

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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.