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Finding the Fourth Proportional to 505,764.60, 758,646.90 and 131,787.60

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Solution

The fourth proportional to 505,764.60, 758,646.90 and 131,787.60 is: 197,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,764.60 : 758,646.90 = 131,787.60 : x
  2. Step 2: Convert to fraction form
    505,764.60/758,646.90 = 131,787.60/x
  3. Step 3: Cross multiply
    505,764.60x = 758,646.90 × 131,787.60
  4. Step 4: Simplify right side
    505,764.60x = 99,980,254,198.44
  5. Step 5: Solve for x
    x = 99,980,254,198.44/505,764.60
  6. Step 6: Final answer
    x = 197,681.40

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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.