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Finding the Fourth Proportional to 321,954.40, 482,931.60 and 164,490.40

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Solution

The fourth proportional to 321,954.40, 482,931.60 and 164,490.40 is: 246,735.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,954.40 : 482,931.60 = 164,490.40 : x
  2. Step 2: Convert to fraction form
    321,954.40/482,931.60 = 164,490.40/x
  3. Step 3: Cross multiply
    321,954.40x = 482,931.60 × 164,490.40
  4. Step 4: Simplify right side
    321,954.40x = 79,437,612,056.64
  5. Step 5: Solve for x
    x = 79,437,612,056.64/321,954.40
  6. Step 6: Final answer
    x = 246,735.60

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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.