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Finding the Fourth Proportional to 314,418.70, 471,591.60 and 89,813.80

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Solution

The fourth proportional to 314,418.70, 471,591.60 and 89,813.80 is: 134,710.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,418.70 : 471,591.60 = 89,813.80 : x
  2. Step 2: Convert to fraction form
    314,418.70/471,591.60 = 89,813.80/x
  3. Step 3: Cross multiply
    314,418.70x = 471,591.60 × 89,813.80
  4. Step 4: Simplify right side
    314,418.70x = 42,355,433,644.08
  5. Step 5: Solve for x
    x = 42,355,433,644.08/314,418.70
  6. Step 6: Final answer
    x = 134,710.29

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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.