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Finding the Fourth Proportional to 302,912.80, 418,000.80 and 166,939.18

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Solution

The fourth proportional to 302,912.80, 418,000.80 and 166,939.18 is: 230,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,912.80 : 418,000.80 = 166,939.18 : x
  2. Step 2: Convert to fraction form
    302,912.80/418,000.80 = 166,939.18/x
  3. Step 3: Cross multiply
    302,912.80x = 418,000.80 × 166,939.18
  4. Step 4: Simplify right side
    302,912.80x = 69,780,710,791.34
  5. Step 5: Solve for x
    x = 69,780,710,791.34/302,912.80
  6. Step 6: Final answer
    x = 230,365.67

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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.