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Finding the Fourth Proportional to 418,908.24, 628,952.85 and 300,515.04

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Solution

The fourth proportional to 418,908.24, 628,952.85 and 300,515.04 is: 451,196.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,908.24 : 628,952.85 = 300,515.04 : x
  2. Step 2: Convert to fraction form
    418,908.24/628,952.85 = 300,515.04/x
  3. Step 3: Cross multiply
    418,908.24x = 628,952.85 × 300,515.04
  4. Step 4: Simplify right side
    418,908.24x = 189,009,790,875.86
  5. Step 5: Solve for x
    x = 189,009,790,875.86/418,908.24
  6. Step 6: Final answer
    x = 451,196.16

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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.