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Finding the Fourth Proportional to 458,169.49, 686,661.45 and 255,760.59

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Solution

The fourth proportional to 458,169.49, 686,661.45 and 255,760.59 is: 383,309.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,169.49 : 686,661.45 = 255,760.59 : x
  2. Step 2: Convert to fraction form
    458,169.49/686,661.45 = 255,760.59/x
  3. Step 3: Cross multiply
    458,169.49x = 686,661.45 × 255,760.59
  4. Step 4: Simplify right side
    458,169.49x = 175,620,939,501.09
  5. Step 5: Solve for x
    x = 175,620,939,501.09/458,169.49
  6. Step 6: Final answer
    x = 383,309.98

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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.