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Finding the Fourth Proportional to 436,299.98, 654,448.75 and 136,781.82

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Solution

The fourth proportional to 436,299.98, 654,448.75 and 136,781.82 is: 205,172.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,299.98 : 654,448.75 = 136,781.82 : x
  2. Step 2: Convert to fraction form
    436,299.98/654,448.75 = 136,781.82/x
  3. Step 3: Cross multiply
    436,299.98x = 654,448.75 × 136,781.82
  4. Step 4: Simplify right side
    436,299.98x = 89,516,690,779.77
  5. Step 5: Solve for x
    x = 89,516,690,779.77/436,299.98
  6. Step 6: Final answer
    x = 205,172.35

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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.