Home / 215,730.92-297,515.31-135,167.30

Finding the Fourth Proportional to 215,730.92, 297,515.31 and 135,167.30

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Solution

The fourth proportional to 215,730.92, 297,515.31 and 135,167.30 is: 186,409.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,730.92 : 297,515.31 = 135,167.30 : x
  2. Step 2: Convert to fraction form
    215,730.92/297,515.31 = 135,167.30/x
  3. Step 3: Cross multiply
    215,730.92x = 297,515.31 × 135,167.30
  4. Step 4: Simplify right side
    215,730.92x = 40,214,339,673.79
  5. Step 5: Solve for x
    x = 40,214,339,673.79/215,730.92
  6. Step 6: Final answer
    x = 186,409.72

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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.