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Finding the Fourth Proportional to 262,988.70, 394,920.45 and 144,744.90

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Solution

The fourth proportional to 262,988.70, 394,920.45 and 144,744.90 is: 217,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,988.70 : 394,920.45 = 144,744.90 : x
  2. Step 2: Convert to fraction form
    262,988.70/394,920.45 = 144,744.90/x
  3. Step 3: Cross multiply
    262,988.70x = 394,920.45 × 144,744.90
  4. Step 4: Simplify right side
    262,988.70x = 57,162,721,043.21
  5. Step 5: Solve for x
    x = 57,162,721,043.21/262,988.70
  6. Step 6: Final answer
    x = 217,358.09

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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.