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Finding the Fourth Proportional to 171,722.20, 257,583.30 and 153,351.40

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Solution

The fourth proportional to 171,722.20, 257,583.30 and 153,351.40 is: 230,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,722.20 : 257,583.30 = 153,351.40 : x
  2. Step 2: Convert to fraction form
    171,722.20/257,583.30 = 153,351.40/x
  3. Step 3: Cross multiply
    171,722.20x = 257,583.30 × 153,351.40
  4. Step 4: Simplify right side
    171,722.20x = 39,500,759,671.62
  5. Step 5: Solve for x
    x = 39,500,759,671.62/171,722.20
  6. Step 6: Final answer
    x = 230,027.10

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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.