Home / 285,157,128.72-427,667,205.92-131,655,700.56

Finding the Fourth Proportional to 285,157,128.72, 427,667,205.92 and 131,655,700.56

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Solution

The fourth proportional to 285,157,128.72, 427,667,205.92 and 131,655,700.56 is: 197,451,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,157,128.72 : 427,667,205.92 = 131,655,700.56 : x
  2. Step 2: Convert to fraction form
    285,157,128.72/427,667,205.92 = 131,655,700.56/x
  3. Step 3: Cross multiply
    285,157,128.72x = 427,667,205.92 × 131,655,700.56
  4. Step 4: Simplify right side
    285,157,128.72x = 56,304,825,601,935,384
  5. Step 5: Solve for x
    x = 56,304,825,601,935,384/285,157,128.72
  6. Step 6: Final answer
    x = 197,451,930.64

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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.