Home / 515,365.32-772,821.36-211,550.88

Finding the Fourth Proportional to 515,365.32, 772,821.36 and 211,550.88

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Solution

The fourth proportional to 515,365.32, 772,821.36 and 211,550.88 is: 317,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,365.32 : 772,821.36 = 211,550.88 : x
  2. Step 2: Convert to fraction form
    515,365.32/772,821.36 = 211,550.88/x
  3. Step 3: Cross multiply
    515,365.32x = 772,821.36 × 211,550.88
  4. Step 4: Simplify right side
    515,365.32x = 163,491,038,790.80
  5. Step 5: Solve for x
    x = 163,491,038,790.80/515,365.32
  6. Step 6: Final answer
    x = 317,233.30

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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.