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Finding the Fourth Proportional to 535,661.28, 803,553.36 and 161,706.72

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Solution

The fourth proportional to 535,661.28, 803,553.36 and 161,706.72 is: 242,578.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,661.28 : 803,553.36 = 161,706.72 : x
  2. Step 2: Convert to fraction form
    535,661.28/803,553.36 = 161,706.72/x
  3. Step 3: Cross multiply
    535,661.28x = 803,553.36 × 161,706.72
  4. Step 4: Simplify right side
    535,661.28x = 129,939,978,190.58
  5. Step 5: Solve for x
    x = 129,939,978,190.58/535,661.28
  6. Step 6: Final answer
    x = 242,578.63

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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.