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Finding the Fourth Proportional to 308,631.44, 462,963 and 87,032.72

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Solution

The fourth proportional to 308,631.44, 462,963 and 87,032.72 is: 130,553.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,631.44 : 462,963 = 87,032.72 : x
  2. Step 2: Convert to fraction form
    308,631.44/462,963 = 87,032.72/x
  3. Step 3: Cross multiply
    308,631.44x = 462,963 × 87,032.72
  4. Step 4: Simplify right side
    308,631.44x = 40,292,929,149.36
  5. Step 5: Solve for x
    x = 40,292,929,149.36/308,631.44
  6. Step 6: Final answer
    x = 130,553.55

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1.5x scale

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.