Home / 211,635.64-317,250.96-78,480.28

Finding the Fourth Proportional to 211,635.64, 317,250.96 and 78,480.28

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Solution

The fourth proportional to 211,635.64, 317,250.96 and 78,480.28 is: 117,645.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,635.64 : 317,250.96 = 78,480.28 : x
  2. Step 2: Convert to fraction form
    211,635.64/317,250.96 = 78,480.28/x
  3. Step 3: Cross multiply
    211,635.64x = 317,250.96 × 78,480.28
  4. Step 4: Simplify right side
    211,635.64x = 24,897,944,171.07
  5. Step 5: Solve for x
    x = 24,897,944,171.07/211,635.64
  6. Step 6: Final answer
    x = 117,645.33

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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.