Home / 308,833.20-426,170-172,844.20

Finding the Fourth Proportional to 308,833.20, 426,170 and 172,844.20

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Solution

The fourth proportional to 308,833.20, 426,170 and 172,844.20 is: 238,513.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,833.20 : 426,170 = 172,844.20 : x
  2. Step 2: Convert to fraction form
    308,833.20/426,170 = 172,844.20/x
  3. Step 3: Cross multiply
    308,833.20x = 426,170 × 172,844.20
  4. Step 4: Simplify right side
    308,833.20x = 73,661,012,714
  5. Step 5: Solve for x
    x = 73,661,012,714/308,833.20
  6. Step 6: Final answer
    x = 238,513.91

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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.