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Finding the Fourth Proportional to 393,563.60, 590,387.58 and 109,255.35

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Solution

The fourth proportional to 393,563.60, 590,387.58 and 109,255.35 is: 163,894.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,563.60 : 590,387.58 = 109,255.35 : x
  2. Step 2: Convert to fraction form
    393,563.60/590,387.58 = 109,255.35/x
  3. Step 3: Cross multiply
    393,563.60x = 590,387.58 × 109,255.35
  4. Step 4: Simplify right side
    393,563.60x = 64,503,001,688.55
  5. Step 5: Solve for x
    x = 64,503,001,688.55/393,563.60
  6. Step 6: Final answer
    x = 163,894.74

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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.