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Finding the Fourth Proportional to 404,408.88, 606,684.66 and 138,106.98

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Solution

The fourth proportional to 404,408.88, 606,684.66 and 138,106.98 is: 207,184.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,408.88 : 606,684.66 = 138,106.98 : x
  2. Step 2: Convert to fraction form
    404,408.88/606,684.66 = 138,106.98/x
  3. Step 3: Cross multiply
    404,408.88x = 606,684.66 × 138,106.98
  4. Step 4: Simplify right side
    404,408.88x = 83,787,386,204.93
  5. Step 5: Solve for x
    x = 83,787,386,204.93/404,408.88
  6. Step 6: Final answer
    x = 207,184.83

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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.