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Finding the Fourth Proportional to 352,716.72, 486,888.64 and 245,349.04

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Solution

The fourth proportional to 352,716.72, 486,888.64 and 245,349.04 is: 338,678.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,716.72 : 486,888.64 = 245,349.04 : x
  2. Step 2: Convert to fraction form
    352,716.72/486,888.64 = 245,349.04/x
  3. Step 3: Cross multiply
    352,716.72x = 486,888.64 × 245,349.04
  4. Step 4: Simplify right side
    352,716.72x = 119,457,660,410.91
  5. Step 5: Solve for x
    x = 119,457,660,410.91/352,716.72
  6. Step 6: Final answer
    x = 338,678.76

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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.