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Finding the Fourth Proportional to 211,417.87, 317,173.45 and 61,669.88

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Solution

The fourth proportional to 211,417.87, 317,173.45 and 61,669.88 is: 92,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,417.87 : 317,173.45 = 61,669.88 : x
  2. Step 2: Convert to fraction form
    211,417.87/317,173.45 = 61,669.88/x
  3. Step 3: Cross multiply
    211,417.87x = 317,173.45 × 61,669.88
  4. Step 4: Simplify right side
    211,417.87x = 19,560,048,600.69
  5. Step 5: Solve for x
    x = 19,560,048,600.69/211,417.87
  6. Step 6: Final answer
    x = 92,518.43

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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.