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Finding the Fourth Proportional to 407,384.30, 611,112 and 167,512.79

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Solution

The fourth proportional to 407,384.30, 611,112 and 167,512.79 is: 251,283.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,384.30 : 611,112 = 167,512.79 : x
  2. Step 2: Convert to fraction form
    407,384.30/611,112 = 167,512.79/x
  3. Step 3: Cross multiply
    407,384.30x = 611,112 × 167,512.79
  4. Step 4: Simplify right side
    407,384.30x = 102,369,076,122.48
  5. Step 5: Solve for x
    x = 102,369,076,122.48/407,384.30
  6. Step 6: Final answer
    x = 251,283.80

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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.