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Finding the Fourth Proportional to 505,516.08, 758,271.72 and 131,538.48

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Solution

The fourth proportional to 505,516.08, 758,271.72 and 131,538.48 is: 197,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,516.08 : 758,271.72 = 131,538.48 : x
  2. Step 2: Convert to fraction form
    505,516.08/758,271.72 = 131,538.48/x
  3. Step 3: Cross multiply
    505,516.08x = 758,271.72 × 131,538.48
  4. Step 4: Simplify right side
    505,516.08x = 99,741,909,475.79
  5. Step 5: Solve for x
    x = 99,741,909,475.79/505,516.08
  6. Step 6: Final answer
    x = 197,307.10

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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.