Home / 315,071.20-472,677.30-115,387.60

Finding the Fourth Proportional to 315,071.20, 472,677.30 and 115,387.60

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Solution

The fourth proportional to 315,071.20, 472,677.30 and 115,387.60 is: 173,107.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,071.20 : 472,677.30 = 115,387.60 : x
  2. Step 2: Convert to fraction form
    315,071.20/472,677.30 = 115,387.60/x
  3. Step 3: Cross multiply
    315,071.20x = 472,677.30 × 115,387.60
  4. Step 4: Simplify right side
    315,071.20x = 54,541,099,221.48
  5. Step 5: Solve for x
    x = 54,541,099,221.48/315,071.20
  6. Step 6: Final answer
    x = 173,107.22

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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.