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Finding the Fourth Proportional to 296,961.20, 445,441.80 and 260,097.20

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Solution

The fourth proportional to 296,961.20, 445,441.80 and 260,097.20 is: 390,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,961.20 : 445,441.80 = 260,097.20 : x
  2. Step 2: Convert to fraction form
    296,961.20/445,441.80 = 260,097.20/x
  3. Step 3: Cross multiply
    296,961.20x = 445,441.80 × 260,097.20
  4. Step 4: Simplify right side
    296,961.20x = 115,858,164,942.96
  5. Step 5: Solve for x
    x = 115,858,164,942.96/296,961.20
  6. Step 6: Final answer
    x = 390,145.80

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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.