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Finding the Fourth Proportional to 393,559.43, 590,280.28 and 109,220.00

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Solution

The fourth proportional to 393,559.43, 590,280.28 and 109,220.00 is: 163,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,559.43 : 590,280.28 = 109,220.00 : x
  2. Step 2: Convert to fraction form
    393,559.43/590,280.28 = 109,220.00/x
  3. Step 3: Cross multiply
    393,559.43x = 590,280.28 × 109,220.00
  4. Step 4: Simplify right side
    393,559.43x = 64,470,408,957.15
  5. Step 5: Solve for x
    x = 64,470,408,957.15/393,559.43
  6. Step 6: Final answer
    x = 163,813.66

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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.