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Finding the Fourth Proportional to 631,841.56, 947,811.30 and 211,118.92

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Solution

The fourth proportional to 631,841.56, 947,811.30 and 211,118.92 is: 316,694.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,841.56 : 947,811.30 = 211,118.92 : x
  2. Step 2: Convert to fraction form
    631,841.56/947,811.30 = 211,118.92/x
  3. Step 3: Cross multiply
    631,841.56x = 947,811.30 × 211,118.92
  4. Step 4: Simplify right side
    631,841.56x = 200,100,898,019.80
  5. Step 5: Solve for x
    x = 200,100,898,019.80/631,841.56
  6. Step 6: Final answer
    x = 316,694.74

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Double scale
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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.