Home / 288,022.20-431,450.10-163,217.40

Finding the Fourth Proportional to 288,022.20, 431,450.10 and 163,217.40

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Solution

The fourth proportional to 288,022.20, 431,450.10 and 163,217.40 is: 244,495.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,022.20 : 431,450.10 = 163,217.40 : x
  2. Step 2: Convert to fraction form
    288,022.20/431,450.10 = 163,217.40/x
  3. Step 3: Cross multiply
    288,022.20x = 431,450.10 × 163,217.40
  4. Step 4: Simplify right side
    288,022.20x = 70,420,163,551.74
  5. Step 5: Solve for x
    x = 70,420,163,551.74/288,022.20
  6. Step 6: Final answer
    x = 244,495.61

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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.