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Finding the Fourth Proportional to 516,972.75, 775,514.75 and 217,483.80

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Solution

The fourth proportional to 516,972.75, 775,514.75 and 217,483.80 is: 326,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,972.75 : 775,514.75 = 217,483.80 : x
  2. Step 2: Convert to fraction form
    516,972.75/775,514.75 = 217,483.80/x
  3. Step 3: Cross multiply
    516,972.75x = 775,514.75 × 217,483.80
  4. Step 4: Simplify right side
    516,972.75x = 168,661,893,698.63
  5. Step 5: Solve for x
    x = 168,661,893,698.63/516,972.75
  6. Step 6: Final answer
    x = 326,249.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.