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Finding the Fourth Proportional to 211,950.60, 317,924.64 and 54,178.80

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Solution

The fourth proportional to 211,950.60, 317,924.64 and 54,178.80 is: 81,267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,950.60 : 317,924.64 = 54,178.80 : x
  2. Step 2: Convert to fraction form
    211,950.60/317,924.64 = 54,178.80/x
  3. Step 3: Cross multiply
    211,950.60x = 317,924.64 × 54,178.80
  4. Step 4: Simplify right side
    211,950.60x = 17,224,775,485.63
  5. Step 5: Solve for x
    x = 17,224,775,485.63/211,950.60
  6. Step 6: Final answer
    x = 81,267.88

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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.