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Finding the Fourth Proportional to 353,443.60, 529,819.80 and 142,800.40

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Solution

The fourth proportional to 353,443.60, 529,819.80 and 142,800.40 is: 214,060.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,443.60 : 529,819.80 = 142,800.40 : x
  2. Step 2: Convert to fraction form
    353,443.60/529,819.80 = 142,800.40/x
  3. Step 3: Cross multiply
    353,443.60x = 529,819.80 × 142,800.40
  4. Step 4: Simplify right side
    353,443.60x = 75,658,479,367.92
  5. Step 5: Solve for x
    x = 75,658,479,367.92/353,443.60
  6. Step 6: Final answer
    x = 214,060.97

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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.