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Finding the Fourth Proportional to 309,850.59, 427,496.36 and 173,864.55

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Solution

The fourth proportional to 309,850.59, 427,496.36 and 173,864.55 is: 239,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,850.59 : 427,496.36 = 173,864.55 : x
  2. Step 2: Convert to fraction form
    309,850.59/427,496.36 = 173,864.55/x
  3. Step 3: Cross multiply
    309,850.59x = 427,496.36 × 173,864.55
  4. Step 4: Simplify right side
    309,850.59x = 74,326,461,388.72
  5. Step 5: Solve for x
    x = 74,326,461,388.72/309,850.59
  6. Step 6: Final answer
    x = 239,878.39

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1.5x scale

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.