Home / 315,118.31-472,456.03-115,412.75

Finding the Fourth Proportional to 315,118.31, 472,456.03 and 115,412.75

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Solution

The fourth proportional to 315,118.31, 472,456.03 and 115,412.75 is: 173,038.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,118.31 : 472,456.03 = 115,412.75 : x
  2. Step 2: Convert to fraction form
    315,118.31/472,456.03 = 115,412.75/x
  3. Step 3: Cross multiply
    315,118.31x = 472,456.03 × 115,412.75
  4. Step 4: Simplify right side
    315,118.31x = 54,527,449,676.38
  5. Step 5: Solve for x
    x = 54,527,449,676.38/315,118.31
  6. Step 6: Final answer
    x = 173,038.02

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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.