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Finding the Fourth Proportional to 312,479.14, 468,719.34 and 112,940.44

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Solution

The fourth proportional to 312,479.14, 468,719.34 and 112,940.44 is: 169,410.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,479.14 : 468,719.34 = 112,940.44 : x
  2. Step 2: Convert to fraction form
    312,479.14/468,719.34 = 112,940.44/x
  3. Step 3: Cross multiply
    312,479.14x = 468,719.34 × 112,940.44
  4. Step 4: Simplify right side
    312,479.14x = 52,937,368,496.11
  5. Step 5: Solve for x
    x = 52,937,368,496.11/312,479.14
  6. Step 6: Final answer
    x = 169,410.89

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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.