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Finding the Fourth Proportional to 631,901.44, 947,852.16 and 211,177.32

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Solution

The fourth proportional to 631,901.44, 947,852.16 and 211,177.32 is: 316,765.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,901.44 : 947,852.16 = 211,177.32 : x
  2. Step 2: Convert to fraction form
    631,901.44/947,852.16 = 211,177.32/x
  3. Step 3: Cross multiply
    631,901.44x = 947,852.16 × 211,177.32
  4. Step 4: Simplify right side
    631,901.44x = 200,164,878,905.01
  5. Step 5: Solve for x
    x = 200,164,878,905.01/631,901.44
  6. Step 6: Final answer
    x = 316,765.98

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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.