Home / 231,217.40-346,853.90-81,426.74

Finding the Fourth Proportional to 231,217.40, 346,853.90 and 81,426.74

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Solution

The fourth proportional to 231,217.40, 346,853.90 and 81,426.74 is: 122,149.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,217.40 : 346,853.90 = 81,426.74 : x
  2. Step 2: Convert to fraction form
    231,217.40/346,853.90 = 81,426.74/x
  3. Step 3: Cross multiply
    231,217.40x = 346,853.90 × 81,426.74
  4. Step 4: Simplify right side
    231,217.40x = 28,243,180,191.88
  5. Step 5: Solve for x
    x = 28,243,180,191.88/231,217.40
  6. Step 6: Final answer
    x = 122,149.89

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1.5x scale

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.