Home / 212,011.60-318,015.16-54,238.80

Finding the Fourth Proportional to 212,011.60, 318,015.16 and 54,238.80

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Solution

The fourth proportional to 212,011.60, 318,015.16 and 54,238.80 is: 81,357.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,011.60 : 318,015.16 = 54,238.80 : x
  2. Step 2: Convert to fraction form
    212,011.60/318,015.16 = 54,238.80/x
  3. Step 3: Cross multiply
    212,011.60x = 318,015.16 × 54,238.80
  4. Step 4: Simplify right side
    212,011.60x = 17,248,760,660.21
  5. Step 5: Solve for x
    x = 17,248,760,660.21/212,011.60
  6. Step 6: Final answer
    x = 81,357.63

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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.