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Finding the Fourth Proportional to 483,653.32, 725,479.11 and 128,667.34

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Solution

The fourth proportional to 483,653.32, 725,479.11 and 128,667.34 is: 193,000.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,653.32 : 725,479.11 = 128,667.34 : x
  2. Step 2: Convert to fraction form
    483,653.32/725,479.11 = 128,667.34/x
  3. Step 3: Cross multiply
    483,653.32x = 725,479.11 × 128,667.34
  4. Step 4: Simplify right side
    483,653.32x = 93,345,467,309.27
  5. Step 5: Solve for x
    x = 93,345,467,309.27/483,653.32
  6. Step 6: Final answer
    x = 193,000.78

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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.