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Finding the Fourth Proportional to 393,385.20, 589,870.44 and 171,510

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Solution

The fourth proportional to 393,385.20, 589,870.44 and 171,510 is: 257,174.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,385.20 : 589,870.44 = 171,510 : x
  2. Step 2: Convert to fraction form
    393,385.20/589,870.44 = 171,510/x
  3. Step 3: Cross multiply
    393,385.20x = 589,870.44 × 171,510
  4. Step 4: Simplify right side
    393,385.20x = 101,168,679,164.40
  5. Step 5: Solve for x
    x = 101,168,679,164.40/393,385.20
  6. Step 6: Final answer
    x = 257,174.59

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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.