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Finding the Fourth Proportional to 315,390.80, 473,215.80 and 115,806.80

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Solution

The fourth proportional to 315,390.80, 473,215.80 and 115,806.80 is: 173,757.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,390.80 : 473,215.80 = 115,806.80 : x
  2. Step 2: Convert to fraction form
    315,390.80/473,215.80 = 115,806.80/x
  3. Step 3: Cross multiply
    315,390.80x = 473,215.80 × 115,806.80
  4. Step 4: Simplify right side
    315,390.80x = 54,801,607,507.44
  5. Step 5: Solve for x
    x = 54,801,607,507.44/315,390.80
  6. Step 6: Final answer
    x = 173,757.79

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1.5x scale

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.