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Finding the Fourth Proportional to 320,428.40, 480,927.72 and 170,792.24

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Solution

The fourth proportional to 320,428.40, 480,927.72 and 170,792.24 is: 256,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,428.40 : 480,927.72 = 170,792.24 : x
  2. Step 2: Convert to fraction form
    320,428.40/480,927.72 = 170,792.24/x
  3. Step 3: Cross multiply
    320,428.40x = 480,927.72 × 170,792.24
  4. Step 4: Simplify right side
    320,428.40x = 82,138,722,576.89
  5. Step 5: Solve for x
    x = 82,138,722,576.89/320,428.40
  6. Step 6: Final answer
    x = 256,340.33

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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.