Home / 315,153.90-472,667.07-115,406.09

Finding the Fourth Proportional to 315,153.90, 472,667.07 and 115,406.09

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Solution

The fourth proportional to 315,153.90, 472,667.07 and 115,406.09 is: 173,085.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,153.90 : 472,667.07 = 115,406.09 : x
  2. Step 2: Convert to fraction form
    315,153.90/472,667.07 = 115,406.09/x
  3. Step 3: Cross multiply
    315,153.90x = 472,667.07 × 115,406.09
  4. Step 4: Simplify right side
    315,153.90x = 54,548,656,057.12
  5. Step 5: Solve for x
    x = 54,548,656,057.12/315,153.90
  6. Step 6: Final answer
    x = 173,085.77

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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.