Home / 272,642.10-408,914.55-172,623.30

Finding the Fourth Proportional to 272,642.10, 408,914.55 and 172,623.30

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Solution

The fourth proportional to 272,642.10, 408,914.55 and 172,623.30 is: 258,904.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,642.10 : 408,914.55 = 172,623.30 : x
  2. Step 2: Convert to fraction form
    272,642.10/408,914.55 = 172,623.30/x
  3. Step 3: Cross multiply
    272,642.10x = 408,914.55 × 172,623.30
  4. Step 4: Simplify right side
    272,642.10x = 70,588,179,039.02
  5. Step 5: Solve for x
    x = 70,588,179,039.02/272,642.10
  6. Step 6: Final answer
    x = 258,904.18

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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.