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Finding the Fourth Proportional to 266,782.68, 368,140.14 and 145,917.72

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Solution

The fourth proportional to 266,782.68, 368,140.14 and 145,917.72 is: 201,355.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,782.68 : 368,140.14 = 145,917.72 : x
  2. Step 2: Convert to fraction form
    266,782.68/368,140.14 = 145,917.72/x
  3. Step 3: Cross multiply
    266,782.68x = 368,140.14 × 145,917.72
  4. Step 4: Simplify right side
    266,782.68x = 53,718,169,869.28
  5. Step 5: Solve for x
    x = 53,718,169,869.28/266,782.68
  6. Step 6: Final answer
    x = 201,355.54

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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.