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Finding the Fourth Proportional to 243,468.05, 365,241.31 and 74,988.32

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Solution

The fourth proportional to 243,468.05, 365,241.31 and 74,988.32 is: 112,494.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,468.05 : 365,241.31 = 74,988.32 : x
  2. Step 2: Convert to fraction form
    243,468.05/365,241.31 = 74,988.32/x
  3. Step 3: Cross multiply
    243,468.05x = 365,241.31 × 74,988.32
  4. Step 4: Simplify right side
    243,468.05x = 27,388,830,217.82
  5. Step 5: Solve for x
    x = 27,388,830,217.82/243,468.05
  6. Step 6: Final answer
    x = 112,494.56

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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.