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Finding the Fourth Proportional to 243,539.56, 365,338.86 and 85,735.72

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Solution

The fourth proportional to 243,539.56, 365,338.86 and 85,735.72 is: 128,613.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,539.56 : 365,338.86 = 85,735.72 : x
  2. Step 2: Convert to fraction form
    243,539.56/365,338.86 = 85,735.72/x
  3. Step 3: Cross multiply
    243,539.56x = 365,338.86 × 85,735.72
  4. Step 4: Simplify right side
    243,539.56x = 31,322,590,206.08
  5. Step 5: Solve for x
    x = 31,322,590,206.08/243,539.56
  6. Step 6: Final answer
    x = 128,613.97

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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.