Home / 212,422.20-318,633.30-64,678.20

Finding the Fourth Proportional to 212,422.20, 318,633.30 and 64,678.20

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Solution

The fourth proportional to 212,422.20, 318,633.30 and 64,678.20 is: 97,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,422.20 : 318,633.30 = 64,678.20 : x
  2. Step 2: Convert to fraction form
    212,422.20/318,633.30 = 64,678.20/x
  3. Step 3: Cross multiply
    212,422.20x = 318,633.30 × 64,678.20
  4. Step 4: Simplify right side
    212,422.20x = 20,608,628,304.06
  5. Step 5: Solve for x
    x = 20,608,628,304.06/212,422.20
  6. Step 6: Final answer
    x = 97,017.30

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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.