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Finding the Fourth Proportional to 508,990.88, 763,246.48 and 188,920.96

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Solution

The fourth proportional to 508,990.88, 763,246.48 and 188,920.96 is: 283,292.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,990.88 : 763,246.48 = 188,920.96 : x
  2. Step 2: Convert to fraction form
    508,990.88/763,246.48 = 188,920.96/x
  3. Step 3: Cross multiply
    508,990.88x = 763,246.48 × 188,920.96
  4. Step 4: Simplify right side
    508,990.88x = 144,193,257,718.22
  5. Step 5: Solve for x
    x = 144,193,257,718.22/508,990.88
  6. Step 6: Final answer
    x = 283,292.42

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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.