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Finding the Fourth Proportional to 212,375.58, 318,612.68 and 70,212.28

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Solution

The fourth proportional to 212,375.58, 318,612.68 and 70,212.28 is: 105,334.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,375.58 : 318,612.68 = 70,212.28 : x
  2. Step 2: Convert to fraction form
    212,375.58/318,612.68 = 70,212.28/x
  3. Step 3: Cross multiply
    212,375.58x = 318,612.68 × 70,212.28
  4. Step 4: Simplify right side
    212,375.58x = 22,370,522,699.71
  5. Step 5: Solve for x
    x = 22,370,522,699.71/212,375.58
  6. Step 6: Final answer
    x = 105,334.72

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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.