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Finding the Fourth Proportional to 312,279.18, 468,131.73 and 112,550.68

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Solution

The fourth proportional to 312,279.18, 468,131.73 and 112,550.68 is: 168,722.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,279.18 : 468,131.73 = 112,550.68 : x
  2. Step 2: Convert to fraction form
    312,279.18/468,131.73 = 112,550.68/x
  3. Step 3: Cross multiply
    312,279.18x = 468,131.73 × 112,550.68
  4. Step 4: Simplify right side
    312,279.18x = 52,688,544,541.08
  5. Step 5: Solve for x
    x = 52,688,544,541.08/312,279.18
  6. Step 6: Final answer
    x = 168,722.57

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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.