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Finding the Fourth Proportional to 312,049.31, 430,626.57 and 168,808.10

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Solution

The fourth proportional to 312,049.31, 430,626.57 and 168,808.10 is: 232,954.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,049.31 : 430,626.57 = 168,808.10 : x
  2. Step 2: Convert to fraction form
    312,049.31/430,626.57 = 168,808.10/x
  3. Step 3: Cross multiply
    312,049.31x = 430,626.57 × 168,808.10
  4. Step 4: Simplify right side
    312,049.31x = 72,693,250,938.08
  5. Step 5: Solve for x
    x = 72,693,250,938.08/312,049.31
  6. Step 6: Final answer
    x = 232,954.38

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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.