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Finding the Fourth Proportional to 505,765.13, 758,647.69 and 131,788.13

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Solution

The fourth proportional to 505,765.13, 758,647.69 and 131,788.13 is: 197,682.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,765.13 : 758,647.69 = 131,788.13 : x
  2. Step 2: Convert to fraction form
    505,765.13/758,647.69 = 131,788.13/x
  3. Step 3: Cross multiply
    505,765.13x = 758,647.69 × 131,788.13
  4. Step 4: Simplify right side
    505,765.13x = 99,980,756,271.21
  5. Step 5: Solve for x
    x = 99,980,756,271.21/505,765.13
  6. Step 6: Final answer
    x = 197,682.19

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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.