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Finding the Fourth Proportional to 219,327.40, 329,136.90 and 124,557.40

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Solution

The fourth proportional to 219,327.40, 329,136.90 and 124,557.40 is: 186,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,327.40 : 329,136.90 = 124,557.40 : x
  2. Step 2: Convert to fraction form
    219,327.40/329,136.90 = 124,557.40/x
  3. Step 3: Cross multiply
    219,327.40x = 329,136.90 × 124,557.40
  4. Step 4: Simplify right side
    219,327.40x = 40,996,436,508.06
  5. Step 5: Solve for x
    x = 40,996,436,508.06/219,327.40
  6. Step 6: Final answer
    x = 186,918.90

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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.