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Finding the Fourth Proportional to 272,653.40, 408,980.10 and 172,926.20

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Solution

The fourth proportional to 272,653.40, 408,980.10 and 172,926.20 is: 259,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,653.40 : 408,980.10 = 172,926.20 : x
  2. Step 2: Convert to fraction form
    272,653.40/408,980.10 = 172,926.20/x
  3. Step 3: Cross multiply
    272,653.40x = 408,980.10 × 172,926.20
  4. Step 4: Simplify right side
    272,653.40x = 70,723,374,568.62
  5. Step 5: Solve for x
    x = 70,723,374,568.62/272,653.40
  6. Step 6: Final answer
    x = 259,389.30

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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.