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Finding the Fourth Proportional to 312,033.40, 430,604.26 and 168,790.37

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Solution

The fourth proportional to 312,033.40, 430,604.26 and 168,790.37 is: 232,929.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,033.40 : 430,604.26 = 168,790.37 : x
  2. Step 2: Convert to fraction form
    312,033.40/430,604.26 = 168,790.37/x
  3. Step 3: Cross multiply
    312,033.40x = 430,604.26 × 168,790.37
  4. Step 4: Simplify right side
    312,033.40x = 72,681,849,793.98
  5. Step 5: Solve for x
    x = 72,681,849,793.98/312,033.40
  6. Step 6: Final answer
    x = 232,929.71

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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.