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Finding the Fourth Proportional to 445,549.46, 668,057.30 and 141,812.42

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Solution

The fourth proportional to 445,549.46, 668,057.30 and 141,812.42 is: 212,633.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,549.46 : 668,057.30 = 141,812.42 : x
  2. Step 2: Convert to fraction form
    445,549.46/668,057.30 = 141,812.42/x
  3. Step 3: Cross multiply
    445,549.46x = 668,057.30 × 141,812.42
  4. Step 4: Simplify right side
    445,549.46x = 94,738,822,411.67
  5. Step 5: Solve for x
    x = 94,738,822,411.67/445,549.46
  6. Step 6: Final answer
    x = 212,633.68

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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.