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Finding the Fourth Proportional to 243,743.53, 365,540.80 and 85,935.08

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Solution

The fourth proportional to 243,743.53, 365,540.80 and 85,935.08 is: 128,876.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,743.53 : 365,540.80 = 85,935.08 : x
  2. Step 2: Convert to fraction form
    243,743.53/365,540.80 = 85,935.08/x
  3. Step 3: Cross multiply
    243,743.53x = 365,540.80 × 85,935.08
  4. Step 4: Simplify right side
    243,743.53x = 31,412,777,891.26
  5. Step 5: Solve for x
    x = 31,412,777,891.26/243,743.53
  6. Step 6: Final answer
    x = 128,876.36

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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.