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Finding the Fourth Proportional to 424,187.52, 636,281.28 and 171,579.84

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Solution

The fourth proportional to 424,187.52, 636,281.28 and 171,579.84 is: 257,369.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,187.52 : 636,281.28 = 171,579.84 : x
  2. Step 2: Convert to fraction form
    424,187.52/636,281.28 = 171,579.84/x
  3. Step 3: Cross multiply
    424,187.52x = 636,281.28 × 171,579.84
  4. Step 4: Simplify right side
    424,187.52x = 109,173,040,217.40
  5. Step 5: Solve for x
    x = 109,173,040,217.40/424,187.52
  6. Step 6: Final answer
    x = 257,369.76

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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.