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Finding the Fourth Proportional to 329,423.40, 494,135.10 and 258,564.60

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Solution

The fourth proportional to 329,423.40, 494,135.10 and 258,564.60 is: 387,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,423.40 : 494,135.10 = 258,564.60 : x
  2. Step 2: Convert to fraction form
    329,423.40/494,135.10 = 258,564.60/x
  3. Step 3: Cross multiply
    329,423.40x = 494,135.10 × 258,564.60
  4. Step 4: Simplify right side
    329,423.40x = 127,765,844,477.46
  5. Step 5: Solve for x
    x = 127,765,844,477.46/329,423.40
  6. Step 6: Final answer
    x = 387,846.90

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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.