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Finding the Fourth Proportional to 309,690.16, 427,387.44 and 182,406.64

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Solution

The fourth proportional to 309,690.16, 427,387.44 and 182,406.64 is: 251,730.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,690.16 : 427,387.44 = 182,406.64 : x
  2. Step 2: Convert to fraction form
    309,690.16/427,387.44 = 182,406.64/x
  3. Step 3: Cross multiply
    309,690.16x = 427,387.44 × 182,406.64
  4. Step 4: Simplify right side
    309,690.16x = 77,958,306,908.60
  5. Step 5: Solve for x
    x = 77,958,306,908.60/309,690.16
  6. Step 6: Final answer
    x = 251,730.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.