Home / 212,424.20-318,636.30-64,680.20

Finding the Fourth Proportional to 212,424.20, 318,636.30 and 64,680.20

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Solution

The fourth proportional to 212,424.20, 318,636.30 and 64,680.20 is: 97,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,424.20 : 318,636.30 = 64,680.20 : x
  2. Step 2: Convert to fraction form
    212,424.20/318,636.30 = 64,680.20/x
  3. Step 3: Cross multiply
    212,424.20x = 318,636.30 × 64,680.20
  4. Step 4: Simplify right side
    212,424.20x = 20,609,459,611.26
  5. Step 5: Solve for x
    x = 20,609,459,611.26/212,424.20
  6. Step 6: Final answer
    x = 97,020.30

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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.