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Finding the Fourth Proportional to 338,187.80, 465,636.94 and 287,094.64

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Solution

The fourth proportional to 338,187.80, 465,636.94 and 287,094.64 is: 395,288.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,187.80 : 465,636.94 = 287,094.64 : x
  2. Step 2: Convert to fraction form
    338,187.80/465,636.94 = 287,094.64/x
  3. Step 3: Cross multiply
    338,187.80x = 465,636.94 × 287,094.64
  4. Step 4: Simplify right side
    338,187.80x = 133,681,869,660.00
  5. Step 5: Solve for x
    x = 133,681,869,660.00/338,187.80
  6. Step 6: Final answer
    x = 395,288.86

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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.