Home / 211,612.23-317,263.32-78,493.14

Finding the Fourth Proportional to 211,612.23, 317,263.32 and 78,493.14

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Solution

The fourth proportional to 211,612.23, 317,263.32 and 78,493.14 is: 117,682.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,612.23 : 317,263.32 = 78,493.14 : x
  2. Step 2: Convert to fraction form
    211,612.23/317,263.32 = 78,493.14/x
  3. Step 3: Cross multiply
    211,612.23x = 317,263.32 × 78,493.14
  4. Step 4: Simplify right side
    211,612.23x = 24,902,994,193.62
  5. Step 5: Solve for x
    x = 24,902,994,193.62/211,612.23
  6. Step 6: Final answer
    x = 117,682.21

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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.