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Finding the Fourth Proportional to 325,416.80, 448,997.82 and 189,368.40

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Solution

The fourth proportional to 325,416.80, 448,997.82 and 189,368.40 is: 261,283.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,416.80 : 448,997.82 = 189,368.40 : x
  2. Step 2: Convert to fraction form
    325,416.80/448,997.82 = 189,368.40/x
  3. Step 3: Cross multiply
    325,416.80x = 448,997.82 × 189,368.40
  4. Step 4: Simplify right side
    325,416.80x = 85,025,998,776.89
  5. Step 5: Solve for x
    x = 85,025,998,776.89/325,416.80
  6. Step 6: Final answer
    x = 261,283.37

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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.