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Finding the Fourth Proportional to 405,095.01, 607,716.33 and 138,882.43

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Solution

The fourth proportional to 405,095.01, 607,716.33 and 138,882.43 is: 208,348.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,095.01 : 607,716.33 = 138,882.43 : x
  2. Step 2: Convert to fraction form
    405,095.01/607,716.33 = 138,882.43/x
  3. Step 3: Cross multiply
    405,095.01x = 607,716.33 × 138,882.43
  4. Step 4: Simplify right side
    405,095.01x = 84,401,120,661.08
  5. Step 5: Solve for x
    x = 84,401,120,661.08/405,095.01
  6. Step 6: Final answer
    x = 208,348.95

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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.