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Finding the Fourth Proportional to 317,136.89, 475,811.08 and 210,939.51

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Solution

The fourth proportional to 317,136.89, 475,811.08 and 210,939.51 is: 316,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,136.89 : 475,811.08 = 210,939.51 : x
  2. Step 2: Convert to fraction form
    317,136.89/475,811.08 = 210,939.51/x
  3. Step 3: Cross multiply
    317,136.89x = 475,811.08 × 210,939.51
  4. Step 4: Simplify right side
    317,136.89x = 100,367,356,067.77
  5. Step 5: Solve for x
    x = 100,367,356,067.77/317,136.89
  6. Step 6: Final answer
    x = 316,479.60

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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.