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Finding the Fourth Proportional to 211,739.64, 317,542.52 and 69,561.56

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Solution

The fourth proportional to 211,739.64, 317,542.52 and 69,561.56 is: 104,320.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,739.64 : 317,542.52 = 69,561.56 : x
  2. Step 2: Convert to fraction form
    211,739.64/317,542.52 = 69,561.56/x
  3. Step 3: Cross multiply
    211,739.64x = 317,542.52 × 69,561.56
  4. Step 4: Simplify right side
    211,739.64x = 22,088,753,057.53
  5. Step 5: Solve for x
    x = 22,088,753,057.53/211,739.64
  6. Step 6: Final answer
    x = 104,320.35

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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.