Home / 189,472.20-284,438.70-142,355.40

Finding the Fourth Proportional to 189,472.20, 284,438.70 and 142,355.40

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Solution

The fourth proportional to 189,472.20, 284,438.70 and 142,355.40 is: 213,706.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,472.20 : 284,438.70 = 142,355.40 : x
  2. Step 2: Convert to fraction form
    189,472.20/284,438.70 = 142,355.40/x
  3. Step 3: Cross multiply
    189,472.20x = 284,438.70 × 142,355.40
  4. Step 4: Simplify right side
    189,472.20x = 40,491,384,913.98
  5. Step 5: Solve for x
    x = 40,491,384,913.98/189,472.20
  6. Step 6: Final answer
    x = 213,706.21

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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.