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Finding the Fourth Proportional to 631,888.55, 947,832.82 and 211,164.42

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Solution

The fourth proportional to 631,888.55, 947,832.82 and 211,164.42 is: 316,746.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,888.55 : 947,832.82 = 211,164.42 : x
  2. Step 2: Convert to fraction form
    631,888.55/947,832.82 = 211,164.42/x
  3. Step 3: Cross multiply
    631,888.55x = 947,832.82 × 211,164.42
  4. Step 4: Simplify right side
    631,888.55x = 200,148,567,692.26
  5. Step 5: Solve for x
    x = 200,148,567,692.26/631,888.55
  6. Step 6: Final answer
    x = 316,746.63

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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.