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Finding the Fourth Proportional to 353,149.60, 529,033.20 and 212,490.40

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Solution

The fourth proportional to 353,149.60, 529,033.20 and 212,490.40 is: 318,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,149.60 : 529,033.20 = 212,490.40 : x
  2. Step 2: Convert to fraction form
    353,149.60/529,033.20 = 212,490.40/x
  3. Step 3: Cross multiply
    353,149.60x = 529,033.20 × 212,490.40
  4. Step 4: Simplify right side
    353,149.60x = 112,414,476,281.28
  5. Step 5: Solve for x
    x = 112,414,476,281.28/353,149.60
  6. Step 6: Final answer
    x = 318,319.70

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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.