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Finding the Fourth Proportional to 354,229.77, 531,459.53 and 212,052.90

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Solution

The fourth proportional to 354,229.77, 531,459.53 and 212,052.90 is: 318,148.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,229.77 : 531,459.53 = 212,052.90 : x
  2. Step 2: Convert to fraction form
    354,229.77/531,459.53 = 212,052.90/x
  3. Step 3: Cross multiply
    354,229.77x = 531,459.53 × 212,052.90
  4. Step 4: Simplify right side
    354,229.77x = 112,697,536,297.04
  5. Step 5: Solve for x
    x = 112,697,536,297.04/354,229.77
  6. Step 6: Final answer
    x = 318,148.12

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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.