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Finding the Fourth Proportional to 315,335.90, 472,722.62 and 115,609.74

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Solution

The fourth proportional to 315,335.90, 472,722.62 and 115,609.74 is: 173,311.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,335.90 : 472,722.62 = 115,609.74 : x
  2. Step 2: Convert to fraction form
    315,335.90/472,722.62 = 115,609.74/x
  3. Step 3: Cross multiply
    315,335.90x = 472,722.62 × 115,609.74
  4. Step 4: Simplify right side
    315,335.90x = 54,651,340,148.93
  5. Step 5: Solve for x
    x = 54,651,340,148.93/315,335.90
  6. Step 6: Final answer
    x = 173,311.51

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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.