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Finding the Fourth Proportional to 211,611.68, 317,416.42 and 74,936.17

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Solution

The fourth proportional to 211,611.68, 317,416.42 and 74,936.17 is: 112,403.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,611.68 : 317,416.42 = 74,936.17 : x
  2. Step 2: Convert to fraction form
    211,611.68/317,416.42 = 74,936.17/x
  3. Step 3: Cross multiply
    211,611.68x = 317,416.42 × 74,936.17
  4. Step 4: Simplify right side
    211,611.68x = 23,785,971,300.35
  5. Step 5: Solve for x
    x = 23,785,971,300.35/211,611.68
  6. Step 6: Final answer
    x = 112,403.87

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1.5x scale

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.