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Finding the Fourth Proportional to 368,812.20, 552,440.70 and 306,604.20

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Solution

The fourth proportional to 368,812.20, 552,440.70 and 306,604.20 is: 459,259.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,812.20 : 552,440.70 = 306,604.20 : x
  2. Step 2: Convert to fraction form
    368,812.20/552,440.70 = 306,604.20/x
  3. Step 3: Cross multiply
    368,812.20x = 552,440.70 × 306,604.20
  4. Step 4: Simplify right side
    368,812.20x = 169,380,638,870.94
  5. Step 5: Solve for x
    x = 169,380,638,870.94/368,812.20
  6. Step 6: Final answer
    x = 459,259.86

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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.