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Finding the Fourth Proportional to 365,430.60, 504,282.78 and 212,481

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Solution

The fourth proportional to 365,430.60, 504,282.78 and 212,481 is: 293,217.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,430.60 : 504,282.78 = 212,481 : x
  2. Step 2: Convert to fraction form
    365,430.60/504,282.78 = 212,481/x
  3. Step 3: Cross multiply
    365,430.60x = 504,282.78 × 212,481
  4. Step 4: Simplify right side
    365,430.60x = 107,150,509,377.18
  5. Step 5: Solve for x
    x = 107,150,509,377.18/365,430.60
  6. Step 6: Final answer
    x = 293,217.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.