Home / 353,105.60-528,967.20-212,446.40

Finding the Fourth Proportional to 353,105.60, 528,967.20 and 212,446.40

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Solution

The fourth proportional to 353,105.60, 528,967.20 and 212,446.40 is: 318,253.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,105.60 : 528,967.20 = 212,446.40 : x
  2. Step 2: Convert to fraction form
    353,105.60/528,967.20 = 212,446.40/x
  3. Step 3: Cross multiply
    353,105.60x = 528,967.20 × 212,446.40
  4. Step 4: Simplify right side
    353,105.60x = 112,377,177,358.08
  5. Step 5: Solve for x
    x = 112,377,177,358.08/353,105.60
  6. Step 6: Final answer
    x = 318,253.74

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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.