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Finding the Fourth Proportional to 312,030.63, 430,601.67 and 168,790.64

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Solution

The fourth proportional to 312,030.63, 430,601.67 and 168,790.64 is: 232,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,030.63 : 430,601.67 = 168,790.64 : x
  2. Step 2: Convert to fraction form
    312,030.63/430,601.67 = 168,790.64/x
  3. Step 3: Cross multiply
    312,030.63x = 430,601.67 × 168,790.64
  4. Step 4: Simplify right side
    312,030.63x = 72,681,529,311.36
  5. Step 5: Solve for x
    x = 72,681,529,311.36/312,030.63
  6. Step 6: Final answer
    x = 232,930.75

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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.