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Finding the Fourth Proportional to 492,781.12, 680,037.60 and 266,426.88

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Solution

The fourth proportional to 492,781.12, 680,037.60 and 266,426.88 is: 367,668.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,781.12 : 680,037.60 = 266,426.88 : x
  2. Step 2: Convert to fraction form
    492,781.12/680,037.60 = 266,426.88/x
  3. Step 3: Cross multiply
    492,781.12x = 680,037.60 × 266,426.88
  4. Step 4: Simplify right side
    492,781.12x = 181,180,296,050.69
  5. Step 5: Solve for x
    x = 181,180,296,050.69/492,781.12
  6. Step 6: Final answer
    x = 367,668.91

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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.