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Finding the Fourth Proportional to 313,453.92, 432,569.52 and 170,215.20

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Solution

The fourth proportional to 313,453.92, 432,569.52 and 170,215.20 is: 234,898.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,453.92 : 432,569.52 = 170,215.20 : x
  2. Step 2: Convert to fraction form
    313,453.92/432,569.52 = 170,215.20/x
  3. Step 3: Cross multiply
    313,453.92x = 432,569.52 × 170,215.20
  4. Step 4: Simplify right side
    313,453.92x = 73,629,907,360.70
  5. Step 5: Solve for x
    x = 73,629,907,360.70/313,453.92
  6. Step 6: Final answer
    x = 234,898.67

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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.