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Finding the Fourth Proportional to 321,987.40, 482,592.30 and 164,134.60

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Solution

The fourth proportional to 321,987.40, 482,592.30 and 164,134.60 is: 246,003.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,987.40 : 482,592.30 = 164,134.60 : x
  2. Step 2: Convert to fraction form
    321,987.40/482,592.30 = 164,134.60/x
  3. Step 3: Cross multiply
    321,987.40x = 482,592.30 × 164,134.60
  4. Step 4: Simplify right side
    321,987.40x = 79,210,094,123.58
  5. Step 5: Solve for x
    x = 79,210,094,123.58/321,987.40
  6. Step 6: Final answer
    x = 246,003.71

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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.