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Finding the Fourth Proportional to 389,559.52, 585,225.99 and 281,821.19

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Solution

The fourth proportional to 389,559.52, 585,225.99 and 281,821.19 is: 423,373.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,559.52 : 585,225.99 = 281,821.19 : x
  2. Step 2: Convert to fraction form
    389,559.52/585,225.99 = 281,821.19/x
  3. Step 3: Cross multiply
    389,559.52x = 585,225.99 × 281,821.19
  4. Step 4: Simplify right side
    389,559.52x = 164,929,085,246.03
  5. Step 5: Solve for x
    x = 164,929,085,246.03/389,559.52
  6. Step 6: Final answer
    x = 423,373.27

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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.