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Finding the Fourth Proportional to 279,246.30, 418,869.45 and 172,958.10

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Solution

The fourth proportional to 279,246.30, 418,869.45 and 172,958.10 is: 259,437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,246.30 : 418,869.45 = 172,958.10 : x
  2. Step 2: Convert to fraction form
    279,246.30/418,869.45 = 172,958.10/x
  3. Step 3: Cross multiply
    279,246.30x = 418,869.45 × 172,958.10
  4. Step 4: Simplify right side
    279,246.30x = 72,446,864,220.05
  5. Step 5: Solve for x
    x = 72,446,864,220.05/279,246.30
  6. Step 6: Final answer
    x = 259,437.15

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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.