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Finding the Fourth Proportional to 259,672.69, 389,508.66 and 144,340.49

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Solution

The fourth proportional to 259,672.69, 389,508.66 and 144,340.49 is: 216,510.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,672.69 : 389,508.66 = 144,340.49 : x
  2. Step 2: Convert to fraction form
    259,672.69/389,508.66 = 144,340.49/x
  3. Step 3: Cross multiply
    259,672.69x = 389,508.66 × 144,340.49
  4. Step 4: Simplify right side
    259,672.69x = 56,221,872,771.12
  5. Step 5: Solve for x
    x = 56,221,872,771.12/259,672.69
  6. Step 6: Final answer
    x = 216,510.54

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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.