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Finding the Fourth Proportional to 510,922.60, 766,383.90 and 136,945.60

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Solution

The fourth proportional to 510,922.60, 766,383.90 and 136,945.60 is: 205,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,922.60 : 766,383.90 = 136,945.60 : x
  2. Step 2: Convert to fraction form
    510,922.60/766,383.90 = 136,945.60/x
  3. Step 3: Cross multiply
    510,922.60x = 766,383.90 × 136,945.60
  4. Step 4: Simplify right side
    510,922.60x = 104,952,903,015.84
  5. Step 5: Solve for x
    x = 104,952,903,015.84/510,922.60
  6. Step 6: Final answer
    x = 205,418.40

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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.