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Finding the Fourth Proportional to 445,632.66, 668,401.59 and 125,776.62

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Solution

The fourth proportional to 445,632.66, 668,401.59 and 125,776.62 is: 188,651.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,632.66 : 668,401.59 = 125,776.62 : x
  2. Step 2: Convert to fraction form
    445,632.66/668,401.59 = 125,776.62/x
  3. Step 3: Cross multiply
    445,632.66x = 668,401.59 × 125,776.62
  4. Step 4: Simplify right side
    445,632.66x = 84,069,292,792.83
  5. Step 5: Solve for x
    x = 84,069,292,792.83/445,632.66
  6. Step 6: Final answer
    x = 188,651.55

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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.