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Finding the Fourth Proportional to 315,382.40, 473,149.20 and 105,022.24

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Solution

The fourth proportional to 315,382.40, 473,149.20 and 105,022.24 is: 157,558.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,382.40 : 473,149.20 = 105,022.24 : x
  2. Step 2: Convert to fraction form
    315,382.40/473,149.20 = 105,022.24/x
  3. Step 3: Cross multiply
    315,382.40x = 473,149.20 × 105,022.24
  4. Step 4: Simplify right side
    315,382.40x = 49,691,188,838.21
  5. Step 5: Solve for x
    x = 49,691,188,838.21/315,382.40
  6. Step 6: Final answer
    x = 157,558.53

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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.