Home / 515,364.32-772,819.86-211,549.88

Finding the Fourth Proportional to 515,364.32, 772,819.86 and 211,549.88

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Solution

The fourth proportional to 515,364.32, 772,819.86 and 211,549.88 is: 317,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,364.32 : 772,819.86 = 211,549.88 : x
  2. Step 2: Convert to fraction form
    515,364.32/772,819.86 = 211,549.88/x
  3. Step 3: Cross multiply
    515,364.32x = 772,819.86 × 211,549.88
  4. Step 4: Simplify right side
    515,364.32x = 163,489,948,644.62
  5. Step 5: Solve for x
    x = 163,489,948,644.62/515,364.32
  6. Step 6: Final answer
    x = 317,231.80

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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.