Home / 212,011.20-318,016.80-201,643.20

Finding the Fourth Proportional to 212,011.20, 318,016.80 and 201,643.20

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Solution

The fourth proportional to 212,011.20, 318,016.80 and 201,643.20 is: 302,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,011.20 : 318,016.80 = 201,643.20 : x
  2. Step 2: Convert to fraction form
    212,011.20/318,016.80 = 201,643.20/x
  3. Step 3: Cross multiply
    212,011.20x = 318,016.80 × 201,643.20
  4. Step 4: Simplify right side
    212,011.20x = 64,125,925,205.76
  5. Step 5: Solve for x
    x = 64,125,925,205.76/212,011.20
  6. Step 6: Final answer
    x = 302,464.80

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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.