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Finding the Fourth Proportional to 312,172.66, 430,794.75 and 168,930.10

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Solution

The fourth proportional to 312,172.66, 430,794.75 and 168,930.10 is: 233,121.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,172.66 : 430,794.75 = 168,930.10 : x
  2. Step 2: Convert to fraction form
    312,172.66/430,794.75 = 168,930.10/x
  3. Step 3: Cross multiply
    312,172.66x = 430,794.75 × 168,930.10
  4. Step 4: Simplify right side
    312,172.66x = 72,774,200,196.98
  5. Step 5: Solve for x
    x = 72,774,200,196.98/312,172.66
  6. Step 6: Final answer
    x = 233,121.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.