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Finding the Fourth Proportional to 439,622.80, 658,915.80 and 186,902.80

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Solution

The fourth proportional to 439,622.80, 658,915.80 and 186,902.80 is: 280,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,622.80 : 658,915.80 = 186,902.80 : x
  2. Step 2: Convert to fraction form
    439,622.80/658,915.80 = 186,902.80/x
  3. Step 3: Cross multiply
    439,622.80x = 658,915.80 × 186,902.80
  4. Step 4: Simplify right side
    439,622.80x = 123,153,207,984.24
  5. Step 5: Solve for x
    x = 123,153,207,984.24/439,622.80
  6. Step 6: Final answer
    x = 280,133.81

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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.