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Finding the Fourth Proportional to 392,485.74, 541,714.74 and 239,491.16

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Solution

The fourth proportional to 392,485.74, 541,714.74 and 239,491.16 is: 330,549.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,485.74 : 541,714.74 = 239,491.16 : x
  2. Step 2: Convert to fraction form
    392,485.74/541,714.74 = 239,491.16/x
  3. Step 3: Cross multiply
    392,485.74x = 541,714.74 × 239,491.16
  4. Step 4: Simplify right side
    392,485.74x = 129,735,888,372.89
  5. Step 5: Solve for x
    x = 129,735,888,372.89/392,485.74
  6. Step 6: Final answer
    x = 330,549.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.