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Finding the Fourth Proportional to 353,297.60, 529,168.80 and 212,811.20

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Solution

The fourth proportional to 353,297.60, 529,168.80 and 212,811.20 is: 318,748.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,297.60 : 529,168.80 = 212,811.20 : x
  2. Step 2: Convert to fraction form
    353,297.60/529,168.80 = 212,811.20/x
  3. Step 3: Cross multiply
    353,297.60x = 529,168.80 × 212,811.20
  4. Step 4: Simplify right side
    353,297.60x = 112,613,047,330.56
  5. Step 5: Solve for x
    x = 112,613,047,330.56/353,297.60
  6. Step 6: Final answer
    x = 318,748.41

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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.