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Finding the Fourth Proportional to 353,455.20, 529,405.20 and 306,799.20

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Solution

The fourth proportional to 353,455.20, 529,405.20 and 306,799.20 is: 459,523.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,455.20 : 529,405.20 = 306,799.20 : x
  2. Step 2: Convert to fraction form
    353,455.20/529,405.20 = 306,799.20/x
  3. Step 3: Cross multiply
    353,455.20x = 529,405.20 × 306,799.20
  4. Step 4: Simplify right side
    353,455.20x = 162,421,091,835.84
  5. Step 5: Solve for x
    x = 162,421,091,835.84/353,455.20
  6. Step 6: Final answer
    x = 459,523.84

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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.