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Finding the Fourth Proportional to 317,120.81, 475,635.08 and 92,420.91

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Solution

The fourth proportional to 317,120.81, 475,635.08 and 92,420.91 is: 138,617.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,120.81 : 475,635.08 = 92,420.91 : x
  2. Step 2: Convert to fraction form
    317,120.81/475,635.08 = 92,420.91/x
  3. Step 3: Cross multiply
    317,120.81x = 475,635.08 × 92,420.91
  4. Step 4: Simplify right side
    317,120.81x = 43,958,627,756.45
  5. Step 5: Solve for x
    x = 43,958,627,756.45/317,120.81
  6. Step 6: Final answer
    x = 138,617.92

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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.