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Finding the Fourth Proportional to 202,179.60, 303,488.10 and 127,384.20

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Solution

The fourth proportional to 202,179.60, 303,488.10 and 127,384.20 is: 191,214.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,179.60 : 303,488.10 = 127,384.20 : x
  2. Step 2: Convert to fraction form
    202,179.60/303,488.10 = 127,384.20/x
  3. Step 3: Cross multiply
    202,179.60x = 303,488.10 × 127,384.20
  4. Step 4: Simplify right side
    202,179.60x = 38,659,588,828.02
  5. Step 5: Solve for x
    x = 38,659,588,828.02/202,179.60
  6. Step 6: Final answer
    x = 191,214.09

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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.