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Finding the Fourth Proportional to 144,636.78, 216,948.83 and 39,455.40

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Solution

The fourth proportional to 144,636.78, 216,948.83 and 39,455.40 is: 59,181.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,636.78 : 216,948.83 = 39,455.40 : x
  2. Step 2: Convert to fraction form
    144,636.78/216,948.83 = 39,455.40/x
  3. Step 3: Cross multiply
    144,636.78x = 216,948.83 × 39,455.40
  4. Step 4: Simplify right side
    144,636.78x = 8,559,802,669.91
  5. Step 5: Solve for x
    x = 8,559,802,669.91/144,636.78
  6. Step 6: Final answer
    x = 59,181.37

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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.