Home / 280,932,190.90-420,558,704.34-169,931,939.56

Finding the Fourth Proportional to 280,932,190.90, 420,558,704.34 and 169,931,939.56

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Solution

The fourth proportional to 280,932,190.90, 420,558,704.34 and 169,931,939.56 is: 254,390,057.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,932,190.90 : 420,558,704.34 = 169,931,939.56 : x
  2. Step 2: Convert to fraction form
    280,932,190.90/420,558,704.34 = 169,931,939.56/x
  3. Step 3: Cross multiply
    280,932,190.90x = 420,558,704.34 × 169,931,939.56
  4. Step 4: Simplify right side
    280,932,190.90x = 71,466,356,327,336,784
  5. Step 5: Solve for x
    x = 71,466,356,327,336,784/280,932,190.90
  6. Step 6: Final answer
    x = 254,390,057.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.