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Finding the Fourth Proportional to 286,487.76, 395,329.94 and 165,636.80

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Solution

The fourth proportional to 286,487.76, 395,329.94 and 165,636.80 is: 228,565.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,487.76 : 395,329.94 = 165,636.80 : x
  2. Step 2: Convert to fraction form
    286,487.76/395,329.94 = 165,636.80/x
  3. Step 3: Cross multiply
    286,487.76x = 395,329.94 × 165,636.80
  4. Step 4: Simplify right side
    286,487.76x = 65,481,186,205.79
  5. Step 5: Solve for x
    x = 65,481,186,205.79/286,487.76
  6. Step 6: Final answer
    x = 228,565.39

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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.