Home / 353,121.60-528,991.20-212,462.40

Finding the Fourth Proportional to 353,121.60, 528,991.20 and 212,462.40

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Solution

The fourth proportional to 353,121.60, 528,991.20 and 212,462.40 is: 318,277.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,121.60 : 528,991.20 = 212,462.40 : x
  2. Step 2: Convert to fraction form
    353,121.60/528,991.20 = 212,462.40/x
  3. Step 3: Cross multiply
    353,121.60x = 528,991.20 × 212,462.40
  4. Step 4: Simplify right side
    353,121.60x = 112,390,739,930.88
  5. Step 5: Solve for x
    x = 112,390,739,930.88/353,121.60
  6. Step 6: Final answer
    x = 318,277.73

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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.