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Finding the Fourth Proportional to 211,710.60, 317,463.84 and 122,989.50

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Solution

The fourth proportional to 211,710.60, 317,463.84 and 122,989.50 is: 184,424.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,710.60 : 317,463.84 = 122,989.50 : x
  2. Step 2: Convert to fraction form
    211,710.60/317,463.84 = 122,989.50/x
  3. Step 3: Cross multiply
    211,710.60x = 317,463.84 × 122,989.50
  4. Step 4: Simplify right side
    211,710.60x = 39,044,718,949.68
  5. Step 5: Solve for x
    x = 39,044,718,949.68/211,710.60
  6. Step 6: Final answer
    x = 184,424.96

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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.