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Finding the Fourth Proportional to 538,276.40, 807,220.20 and 271,948.40

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Solution

The fourth proportional to 538,276.40, 807,220.20 and 271,948.40 is: 407,824.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,276.40 : 807,220.20 = 271,948.40 : x
  2. Step 2: Convert to fraction form
    538,276.40/807,220.20 = 271,948.40/x
  3. Step 3: Cross multiply
    538,276.40x = 807,220.20 × 271,948.40
  4. Step 4: Simplify right side
    538,276.40x = 219,522,241,837.68
  5. Step 5: Solve for x
    x = 219,522,241,837.68/538,276.40
  6. Step 6: Final answer
    x = 407,824.39

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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.