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Finding the Fourth Proportional to 445,957.76, 669,076.32 and 146,440.64

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Solution

The fourth proportional to 445,957.76, 669,076.32 and 146,440.64 is: 219,706.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,957.76 : 669,076.32 = 146,440.64 : x
  2. Step 2: Convert to fraction form
    445,957.76/669,076.32 = 146,440.64/x
  3. Step 3: Cross multiply
    445,957.76x = 669,076.32 × 146,440.64
  4. Step 4: Simplify right side
    445,957.76x = 97,979,964,509.64
  5. Step 5: Solve for x
    x = 97,979,964,509.64/445,957.76
  6. Step 6: Final answer
    x = 219,706.83

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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.