Home / 211,781.18-317,710.96-69,634.28

Finding the Fourth Proportional to 211,781.18, 317,710.96 and 69,634.28

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Solution

The fourth proportional to 211,781.18, 317,710.96 and 69,634.28 is: 104,464.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,781.18 : 317,710.96 = 69,634.28 : x
  2. Step 2: Convert to fraction form
    211,781.18/317,710.96 = 69,634.28/x
  3. Step 3: Cross multiply
    211,781.18x = 317,710.96 × 69,634.28
  4. Step 4: Simplify right side
    211,781.18x = 22,123,574,567.90
  5. Step 5: Solve for x
    x = 22,123,574,567.90/211,781.18
  6. Step 6: Final answer
    x = 104,464.31

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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.