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Finding the Fourth Proportional to 439,640.20, 659,460.30 and 306,670.60

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Solution

The fourth proportional to 439,640.20, 659,460.30 and 306,670.60 is: 460,005.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,640.20 : 659,460.30 = 306,670.60 : x
  2. Step 2: Convert to fraction form
    439,640.20/659,460.30 = 306,670.60/x
  3. Step 3: Cross multiply
    439,640.20x = 659,460.30 × 306,670.60
  4. Step 4: Simplify right side
    439,640.20x = 202,237,085,877.18
  5. Step 5: Solve for x
    x = 202,237,085,877.18/439,640.20
  6. Step 6: Final answer
    x = 460,005.90

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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.