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Finding the Fourth Proportional to 479,863.44, 720,017.71 and 209,956.00

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Solution

The fourth proportional to 479,863.44, 720,017.71 and 209,956.00 is: 315,031.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,863.44 : 720,017.71 = 209,956.00 : x
  2. Step 2: Convert to fraction form
    479,863.44/720,017.71 = 209,956.00/x
  3. Step 3: Cross multiply
    479,863.44x = 720,017.71 × 209,956.00
  4. Step 4: Simplify right side
    479,863.44x = 151,172,037,345.86
  5. Step 5: Solve for x
    x = 151,172,037,345.86/479,863.44
  6. Step 6: Final answer
    x = 315,031.37

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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.