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Finding the Fourth Proportional to 445,149.43, 668,391.18 and 385,362.32

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Solution

The fourth proportional to 445,149.43, 668,391.18 and 385,362.32 is: 578,620.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,149.43 : 668,391.18 = 385,362.32 : x
  2. Step 2: Convert to fraction form
    445,149.43/668,391.18 = 385,362.32/x
  3. Step 3: Cross multiply
    445,149.43x = 668,391.18 × 385,362.32
  4. Step 4: Simplify right side
    445,149.43x = 257,572,775,792.34
  5. Step 5: Solve for x
    x = 257,572,775,792.34/445,149.43
  6. Step 6: Final answer
    x = 578,620.93

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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.