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Finding the Fourth Proportional to 393,930.93, 590,933.55 and 305,283.72

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Solution

The fourth proportional to 393,930.93, 590,933.55 and 305,283.72 is: 457,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,930.93 : 590,933.55 = 305,283.72 : x
  2. Step 2: Convert to fraction form
    393,930.93/590,933.55 = 305,283.72/x
  3. Step 3: Cross multiply
    393,930.93x = 590,933.55 × 305,283.72
  4. Step 4: Simplify right side
    393,930.93x = 180,402,392,416.81
  5. Step 5: Solve for x
    x = 180,402,392,416.81/393,930.93
  6. Step 6: Final answer
    x = 457,954.37

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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.