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Finding the Fourth Proportional to 452,991.95, 679,488.05 and 133,143.87

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Solution

The fourth proportional to 452,991.95, 679,488.05 and 133,143.87 is: 199,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,991.95 : 679,488.05 = 133,143.87 : x
  2. Step 2: Convert to fraction form
    452,991.95/679,488.05 = 133,143.87/x
  3. Step 3: Cross multiply
    452,991.95x = 679,488.05 × 133,143.87
  4. Step 4: Simplify right side
    452,991.95x = 90,469,668,595.75
  5. Step 5: Solve for x
    x = 90,469,668,595.75/452,991.95
  6. Step 6: Final answer
    x = 199,715.84

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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.