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Finding the Fourth Proportional to 338,203.68, 465,658.86 and 287,110.50

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Solution

The fourth proportional to 338,203.68, 465,658.86 and 287,110.50 is: 395,310.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,203.68 : 465,658.86 = 287,110.50 : x
  2. Step 2: Convert to fraction form
    338,203.68/465,658.86 = 287,110.50/x
  3. Step 3: Cross multiply
    338,203.68x = 465,658.86 × 287,110.50
  4. Step 4: Simplify right side
    338,203.68x = 133,695,548,124.03
  5. Step 5: Solve for x
    x = 133,695,548,124.03/338,203.68
  6. Step 6: Final answer
    x = 395,310.74

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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.