Home / 308,489.20-425,712.04-172,521.60

Finding the Fourth Proportional to 308,489.20, 425,712.04 and 172,521.60

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Solution

The fourth proportional to 308,489.20, 425,712.04 and 172,521.60 is: 238,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,489.20 : 425,712.04 = 172,521.60 : x
  2. Step 2: Convert to fraction form
    308,489.20/425,712.04 = 172,521.60/x
  3. Step 3: Cross multiply
    308,489.20x = 425,712.04 × 172,521.60
  4. Step 4: Simplify right side
    308,489.20x = 73,444,522,280.06
  5. Step 5: Solve for x
    x = 73,444,522,280.06/308,489.20
  6. Step 6: Final answer
    x = 238,078.10

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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.