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Finding the Fourth Proportional to 493,141.12, 680,534.40 and 266,786.80

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Solution

The fourth proportional to 493,141.12, 680,534.40 and 266,786.80 is: 368,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,141.12 : 680,534.40 = 266,786.80 : x
  2. Step 2: Convert to fraction form
    493,141.12/680,534.40 = 266,786.80/x
  3. Step 3: Cross multiply
    493,141.12x = 680,534.40 × 266,786.80
  4. Step 4: Simplify right side
    493,141.12x = 181,557,594,865.92
  5. Step 5: Solve for x
    x = 181,557,594,865.92/493,141.12
  6. Step 6: Final answer
    x = 368,165.60

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1.5x scale

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.