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Finding the Fourth Proportional to 353,456.20, 529,406.70 and 306,800.20

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Solution

The fourth proportional to 353,456.20, 529,406.70 and 306,800.20 is: 459,525.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,456.20 : 529,406.70 = 306,800.20 : x
  2. Step 2: Convert to fraction form
    353,456.20/529,406.70 = 306,800.20/x
  3. Step 3: Cross multiply
    353,456.20x = 529,406.70 × 306,800.20
  4. Step 4: Simplify right side
    353,456.20x = 162,422,081,441.34
  5. Step 5: Solve for x
    x = 162,422,081,441.34/353,456.20
  6. Step 6: Final answer
    x = 459,525.34

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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.