Home / 308,629.70-425,948.22-172,671.20

Finding the Fourth Proportional to 308,629.70, 425,948.22 and 172,671.20

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Solution

The fourth proportional to 308,629.70, 425,948.22 and 172,671.20 is: 238,308.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,629.70 : 425,948.22 = 172,671.20 : x
  2. Step 2: Convert to fraction form
    308,629.70/425,948.22 = 172,671.20/x
  3. Step 3: Cross multiply
    308,629.70x = 425,948.22 × 172,671.20
  4. Step 4: Simplify right side
    308,629.70x = 73,548,990,285.26
  5. Step 5: Solve for x
    x = 73,548,990,285.26/308,629.70
  6. Step 6: Final answer
    x = 238,308.21

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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.