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Finding the Fourth Proportional to 393,372.80, 590,001.60 and 112,860.80

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Solution

The fourth proportional to 393,372.80, 590,001.60 and 112,860.80 is: 169,274.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,372.80 : 590,001.60 = 112,860.80 : x
  2. Step 2: Convert to fraction form
    393,372.80/590,001.60 = 112,860.80/x
  3. Step 3: Cross multiply
    393,372.80x = 590,001.60 × 112,860.80
  4. Step 4: Simplify right side
    393,372.80x = 66,588,052,577.28
  5. Step 5: Solve for x
    x = 66,588,052,577.28/393,372.80
  6. Step 6: Final answer
    x = 169,274.67

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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.