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Finding the Fourth Proportional to 144,387.36, 216,581.04 and 39,221.82

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Solution

The fourth proportional to 144,387.36, 216,581.04 and 39,221.82 is: 58,832.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,387.36 : 216,581.04 = 39,221.82 : x
  2. Step 2: Convert to fraction form
    144,387.36/216,581.04 = 39,221.82/x
  3. Step 3: Cross multiply
    144,387.36x = 216,581.04 × 39,221.82
  4. Step 4: Simplify right side
    144,387.36x = 8,494,702,566.29
  5. Step 5: Solve for x
    x = 8,494,702,566.29/144,387.36
  6. Step 6: Final answer
    x = 58,832.73

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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.