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Finding the Fourth Proportional to 458,147.75, 685,939.39 and 345,475.33

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Solution

The fourth proportional to 458,147.75, 685,939.39 and 345,475.33 is: 517,246.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,147.75 : 685,939.39 = 345,475.33 : x
  2. Step 2: Convert to fraction form
    458,147.75/685,939.39 = 345,475.33/x
  3. Step 3: Cross multiply
    458,147.75x = 685,939.39 × 345,475.33
  4. Step 4: Simplify right side
    458,147.75x = 236,975,134,541.71
  5. Step 5: Solve for x
    x = 236,975,134,541.71/458,147.75
  6. Step 6: Final answer
    x = 517,246.10

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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.