Home / 285,157,128.68-427,667,205.90-131,655,700.52

Finding the Fourth Proportional to 285,157,128.68, 427,667,205.90 and 131,655,700.52

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Solution

The fourth proportional to 285,157,128.68, 427,667,205.90 and 131,655,700.52 is: 197,451,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,157,128.68 : 427,667,205.90 = 131,655,700.52 : x
  2. Step 2: Convert to fraction form
    285,157,128.68/427,667,205.90 = 131,655,700.52/x
  3. Step 3: Cross multiply
    285,157,128.68x = 427,667,205.90 × 131,655,700.52
  4. Step 4: Simplify right side
    285,157,128.68x = 56,304,825,582,195,576
  5. Step 5: Solve for x
    x = 56,304,825,582,195,576/285,157,128.68
  6. Step 6: Final answer
    x = 197,451,930.60

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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.