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Finding the Fourth Proportional to 338,756.82, 508,135.24 and 89,440.98

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Solution

The fourth proportional to 338,756.82, 508,135.24 and 89,440.98 is: 134,161.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,756.82 : 508,135.24 = 89,440.98 : x
  2. Step 2: Convert to fraction form
    338,756.82/508,135.24 = 89,440.98/x
  3. Step 3: Cross multiply
    338,756.82x = 508,135.24 × 89,440.98
  4. Step 4: Simplify right side
    338,756.82x = 45,448,113,838.14
  5. Step 5: Solve for x
    x = 45,448,113,838.14/338,756.82
  6. Step 6: Final answer
    x = 134,161.47

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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.