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Finding the Fourth Proportional to 317,245.21, 475,866.63 and 77,356.35

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Solution

The fourth proportional to 317,245.21, 475,866.63 and 77,356.35 is: 116,034.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,245.21 : 475,866.63 = 77,356.35 : x
  2. Step 2: Convert to fraction form
    317,245.21/475,866.63 = 77,356.35/x
  3. Step 3: Cross multiply
    317,245.21x = 475,866.63 × 77,356.35
  4. Step 4: Simplify right side
    317,245.21x = 36,811,305,583.60
  5. Step 5: Solve for x
    x = 36,811,305,583.60/317,245.21
  6. Step 6: Final answer
    x = 116,034.24

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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.